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The 10 Best Aquarium Cleaning Supplies, According to a Pet Fish Veterinarian

An automatic aquarium cleaner we recommend on a green background
Credit:

The Spruce Pets

A clean aquarium will create a better environment for your fish, invertebrates, and plants, so it’s not only important to clean properly, but also to create a consistent and workable cleaning schedule.

The best aquarium cleaning supplies won’t just handle grimy glass, but also help you clean out algae, eliminate waste from your aquarium’s substrate, and properly condition your water for optimal clarity and the health of your tank’s residents. 

Some of our favorite cleaning solutions provide useful alternatives to traditional cleaning products. We also have recommendations that will automate some of your aquarium cleaning duties, or even allow you to clean the inside of the tank from the outside. 

What We Like
  • Suction created automatically

  • No lifting heavy buckets

  • Can control suction level

What We Don’t Like
  • Additional water wasted to provide suction

  • Long hose to store

If you want to take the stress out of aquarium cleaning, then you need the Python Gravel Cleaning. After having used these to clean small tanks in a large aquarium, I’ve never used any other type. This gravel siphon hooks onto your sink and instantly creates suction to quickly drain your tank while doing effective vacuuming. There is some water lost to creating suction, so keep this in mind if you do not want to waste water.

Don’t just stir your gravel and expect your filter to grab everything for you! All fish tanks require a gravel vacuum to keep things clean. The Python system makes aquarium cleaning as easy as possible. You can vary the vacuum attachment and how fast the water flows to adapt this system to any size tank. And once you’re done vacuuming, a simple twist of the attachment and the water flows the other way, easily filling your tank! Just don’t forget the water conditioner.

Sizes: 25, 50, 75, and 100 feet | Materials: Plastic

What We Like
  • Highly effective at cleaning multiple substances off glass

  • Inexpensive

  • Can replace blades

What We Don’t Like
  • Cannot use on acrylic tanks

Cleaning aquarium glass can seem like an endless chore but make short work of it with the Pronetcus Algae Scraper. Having made the mistake myself in using a glass scraper on an acrylic tank, be sure you know what type you have before purchasing a scraper! Glass scrapers are typically metal which will seriously screw up an acrylic tank. Hopefully, your mistake will not be witnessed by countless aquarium patrons like mine.

This scraper comes in a few different lengths, depending on the depth of your tank. It also has the ability to replace the scraper blade, 10 of which are included, which is key in keeping your tank clean as blades get nicked with use. It is an inexpensive product that will keep your glass looking pristine with minimal effort.

Sizes: 16, 22, and, 26 inches | Materials: Stainless steel handle, metal blade

What We Like
  • Cleans acrylic tanks well

  • Can be swapped out for metal glass blade

  • Blades can be easily swapped

What We Don’t Like
  • Wears down within a few months

  • Hard to make acrylic look clean

In all honesty, I am not a fan of acrylic aquariums since you just cannot make them pristinely clean like glass tanks. For cleaning acrylic, the best option is the Continuum Aquatics AquaBlade, a plastic scraper. All acrylic scrapers can be very frustrating to work with. Plastic scrapers will protect your acrylic tank surface, but will get nicks very easily, causing them to be less reliable over time. Thankfully, this model has easy to replace blades that can even be swapped for a glass scraper if you swap out your tank. Never swap out a glass scraper for an acrylic one! You will be sorry with even more scratches along the sides of your aquarium.

This model comes in two lengths with a solid fiberglass handle for tough scrubbing. I have used my hand directly on the scraper before to improve performance rather than hanging on to the end of the handle. If less than perfect aquarium sides bother you as much as me, I highly recommend a glass tank.

Sizes: 14, 24, and  35 inches | Materials: Fiberglass handle, plastic blade

What We Like
  • Easy to use

  • Does not contain ammonia

  • For both glass and acrylic tanks

What We Don’t Like
  • Do not need fish-specific cleaner

If you need your tank looking its absolute best, then you’ll need Fritz Aquatics Aquarium Cleaner. This product is made for both acrylic and glass tanks and does not contain ammonia, so it is safe for your fish. Apply a few spritzes to the outside of your tank and wipe it down with a soft cloth.

Do you really need a fish-specific cleaner? Absolutely not. You can use any cleaner you desire on the outside of your glass tank provided you do not spray it directly in the tank. This can be easily solved by first spraying the cleaning cloth and then applying it to your tank. Keep in mind that some products may cause streaking on acrylic, so thoroughly do your research prior to using other cleaners. My main issue with many of these aquarium products is that no ingredients are listed, so it is hard to know what exactly you are applying to your tank.

Sizes: 8 ounces

What We Like
  • Inexpensive

  • Effective for algae removal

What We Don’t Like
  • Will break down with repeated use

If algae is bothering you and not your fish, it’s time for an effective algae cleaner such as the glass and acrylic models from API. This simple, yet effective, model is ideal for removing stubborn algae with a little elbow grease. As with other products, be sure you select the right tool for your tank, be it a glass or acrylic aquarium.

I have used many of these scrapers with my own tanks and our previous fish hospital. Some algae may take a few passes with some grunt work, but these scrapers have never let me down. To apply more pressure, I hold it right above the sponge rather than the end of the handle. Since you’ll be scrubbing repeatedly, the sponge will wear down over time, but they are inexpensive to replace.

Length: 18 inches | Materials: Plastic handle, plastic sponge

What We Like
  • Don’t have to touch water to clean glass

  • Self-floating for easy retrieval

  • Strong magnets to easily scrub algae

What We Don’t Like
  • Less effective than getting into tank with scraper

  • Takes some practice and coordination for best results

Rather than get your hands dirty in the tank, you can try an aquarium magnet cleaner. Keep in mind that not all of these magnet cleaners are created equal, and the NEPTONION Magnet Scraper is a simple, yet effective tool. Many products have weak magnets or an extra scraper attachment, which in my opinion is completely useless, so this model wins on simplicity and strong hold. Simply guide the external felt pad handle over the scrub component inside the tank and get to scrubbing.

This model also has a self-floating feature so it will not fall to the bottom of your tank after cleaning, requiring you to reach inside and fish it out. It comes in a few different sizes but will need to be rinsed after use to keep the pad fresh and clean. Highly recommended for families with smaller kids since they will be entertained to scrub externally without exposing themselves to the fish or tank water.

Sizes: Small (2.8 x 1.5 x 2.4 inches), large (4.3 x 2.3 x 3.5 inches), x-large (4.8 x 2.6 x 4.1 inches) | Materials: Plastic handle, felt sponge

What We Like
  • Reduces scratches on acrylic tank material

  • Removes algae

  • Easy to replace pads after wear

What We Don’t Like
  • Limited scrubbing ability compared to in-tank model

Using magnets to clean acrylic tanks can be slightly tricky. Magnets utilize strong forces on both sides of the tank to effectively clean the surface and acrylic just doesn’t like this most of the time. If you cannot put your hands in the tank, however, the Aqueon Algae Cleaning Magnet is a good choice. Remember, most algae bothers people, not fish, so a little bit leftover after cleaning shouldn’t be anything to stress over.

The Aqueon magnet is easy to use and has interchangeable pads, so it can be used in a glass tank if you upgrade. Never use the same equipment between two tanks since it can be a cause of disease spread. This magnet is weighted, so after detaching, it will fall to the bottom of your tank and will need to be retrieved using the magnet or a net. Hopefully, it does not hit anything as it falls!

Sizes: Small (4.6 x 7.5 x 2.4 inches), medium (4.5 x 9 x 2.5 inches), large (5.2 x 10.6 x 3 inches) | Materials: Plastic handle, felt sponge

Best Aquascaping Tool Kit

Ohtomber Aquascape Tool Kit

Amazon Ohtomber Aquascape Tool Kit
Credit: Amazon
What We Like
  • Long handles for deep access

  • Rust proof stainless steel

  • Inexpensive

What We Don’t Like
  • Less precise placement

For those aquascapers out there, having quality tools to keep your plants in check is a worthwhile investment. This four piece aquascape kit by Ohtomber includes a pair of curved scissors, landscaping tool, curved and straight tweezers. All these items make it easy to keep your plant life looking its best. Remember that with all aquatic plants, you need to remove dead plants as before they decay and return ammonia back to your system.

All the included tools are fairly long, between 10 and 13 inches, which makes them a little bit unwieldy for precise placement of plants. They are made of quality stainless steel so are less likely to rust and be used for many years. The teeth on the tweezers are not very tight, so it may take additional pressure to hold onto plants which can damage them inadvertently.

Includes: Terrain scraper, curved scissors, curved forceps, straight forceps

What We Like
  • Inexpensive

  • Long reaching handle

  • Tube cleaner for filters

What We Don’t Like
  • Only one handle

  • For both glass and acrylic tanks

With many all-in-one cleaning kits on the market, some have come up with useless tools simply to have more components and seem more “complete.” However, in my experience, the quality tools that you use all the time make much more sense for an all-in-one setup, which is why we recommend the 7-in-1 Aquarium Cleaning Tool by SEQOURA. This kit includes a sturdy handle that extends up to over 2 feet long with multiple heads to change out. Included is a gravel rake, large scrub brush for décor, a plant fork, “large” fish net, glass cleaning sponge and large scraper. This kit also includes a tube brush which is very handy for cleaning your filters.

This kit unfortunately labels itself as usable with both glass and acrylic tanks. This is a big problem since it likely means it won’t clean your glass very effectively and will likely scratch your acrylic tank. It is hard to design a product with both materials in mind, so if you want a deep clean, we highly recommend building your own kit from the other products listed on this post.

Includes: Telescopic handle, large scraper, adjustable angle brush, gravel rake, plant fork, adjustable angle flat sponge, large fish net, and aquarium filter hose brush

What We Like
  • Quick and effective

  • Inexpensive

  • Will save your fishes’ lives

What We Don’t Like
  • May need a syringe to measure effectively

You only need your water conditioner to do one job: remove toxic chlorine and chloramine from your tap water and API Tap Water Conditioner does just that. This is the conditioner I have used myself in my own tanks for years and the one we recommend to all of our clients.

When it comes to water conditioners, it is critical to only use ONE. If you use multiple ones at the same time, you could seriously hurt your fish and their environment, especially if they have an ammonia binder. True, you won’t hurt your fish by using a little bit more than recommended, but two or three times the necessary amount is just a waste of product and could seriously harm your fish. These products may look just like water, but they certainly do not act the same way! Remember, when adding conditioner to your tank, you only need to treat the volume of new water, not the total volume of the tank.

Sizes: 1, 16, 64, and 128 ounces

Final Verdict

When it comes to cleaning your aquarium, we cannot recommend the Python Gravel Vacuum enough. It is very easy to use and makes cleaning your aquarium considerably less arduous and especially important if you can’t or won’t lug around large buckets of water. Once you’re ready to refill, use API Tap Water Conditioner to make your new water safe for fish. It does its job simply and effectively without a bunch of worthless additives. I have used both products many times in my almost 20 years of keeping fish and they have not let me down yet!

What To Look For When Buying Aquarium Supplies

Freshwater vs. Saltwater

There are no cleaning tools that are saltwater or freshwater specific. You can use any of the above tools on either type of system, even brackish! If anything is labelled “saltwater” or “freshwater only,” this is a marketing gimmick.

Glass vs. Acrylic

As mentioned with many of the items above, it is critical to know if your aquarium is glass or acrylic. Glass tanks tend to be heavier but are sturdier and will hold up to more aggressive cleaning. Acrylic tanks can be easily damaged by vigorous cleaning, especially with any metal tools made for glass tanks. Take it from someone who used the wrong tools on a curved acrylic tank at a major aquarium causing major scratches, you will regret using the wrong tool!

Fish Removal During Cleaning

You should avoid removing your fish during cleaning. It can cause considerable stress for your fish to handle them and put them in a foreign environment, even for a short period of time. Proper aquarium cleaning can be done with all the fish in the tank. Remove decorations from half of the tank at one time to ensure thorough cleaning while your fish still have a safe place to hide.

Water Changes

Water changes are necessary for all artificial fish systems. This is essentially the removal of old water and replacing it with new, treated fresh water from the tap, bottles or an RO or IO unit. Never replace more than 50% of the water in your tank at one time and always ensure your fish have enough water to cover themselves and their favorite hiding place during cleaning time. Doing more than a 50% water change at one time could severely impact your tank’s water chemistry, specifically temperature and pH, which can seriously stress your fish.

Cleaning Tasks

Please note this is only a general guideline. Cleaning frequency and volume will be determined by bioload, size of tank, and filtration capability.

Here are some examples of common aquarium cleaning tasks:

Daily

  •  Remove excess food
  • Monitor water level and top off if necessary
  • Evaluate fish swimming behavior and appetite (make note if anything seems different)
  • Check water temperature

Weekly

  • 10 percent water change using gravel siphon or 25 percent every other week
  • Perform water quality testing if new fish or equipment have been added within last 2 months
  • Scrub algae from the sides of aquarium
  • Rinse biological filtration gently in reserve tank water
  • Remove any dead leaves from live plants

Monthly

  • Rinse biological filtration gently in old tank water
  • Perform water quality testing if NO new fish or equipment have been added within last 2 months
  • Remove décor and scrub separately
  •  Vacuum gravel under décor

Yearly

  • Buy a new water test kit
FAQ
  • How do you use an aquarium gravel cleaner?

    Gravel cleaners take a bit of practice. Before you start vacuuming, remove all of your décor items and any plants that are not rooted in substrate. Lots of debris can end up under these items without many owners realizing it. 

    Once everything is removed, turn off your filter. Hook up your gravel vacuum and submerge the larger diameter hose in your aquarium. Pay attention to the open end so no fish or wayward invertebrates get sucked in. Place the end of your vacuum tube in a collection waste bucket that you can use to rinse your filters. 

    If you are using the Python system we recommend, hook it up to your sink and start the water running to get a siphon started. Traditional gravel siphons use a squeeze bulb instead, which requires manual pumping to generate the siphon action.

    If your gravel siphon can’t reach the bottom of your gravel, then your substrate is likely too deep. Allow the siphon to lift the gravel slightly and then pull the siphon up. This will allow the cleaned substrate to fall back to the bottom of the tank. Move along your tank in a zigzag pattern until you have cleaned all of the gravel. Your siphon should be the correct size so you do not remove more than 50% of the water while siphoning your entire tank.

  • How do you use a magnetic glass cleaner?

    To use a magnetic glass/acrylic cleaner, place the side with the scrubbing pad in your tank, facing the glass. Then attach the magnetic handle from the outside. It may take some practice to get everything to line up correctly. As with all scrubbers, be sure to check your scrubbing pad for any debris before attaching it to your tank wall, since gravel or other coarse objects stuck in the scrubber pad could damage your glass or acrylic walls. The easiest method for separating the exterior handle and the interior scrubber is typically by twisting—rather than pulling—them apart, lessening the magnetic contact surface area.

  • Is vinegar safe for cleaning aquariums?

    Vinegar for cleaning aquariums can be used only if the tank is empty. Using it in a tank with live animals can severely alter your water’s pH and stress out your tank inhabitants. If you are switching out systems, here are some methods you can use to clean out your tank.

  • How do I clean my filter?

    Hang-on filters, internal filters, and canister filters should be cleaned regularly. Although many filter materials say they need to be replaced often, you should never replace your filter media until it is about to fall apart. The best method of cleaning a filter is to collect a bucket of waste tank water from your gravel siphon, take your filter apart and gently submerge the components. Swish them around in the wastewater and replace them in your filter. Resist the urge to clean them too thoroughly using chlorinated tap water. If your filter is about to disintegrate, replace only 50% at one time to preserve your biological filtration.

Why Trust The Spruce Pets?

This story was written by Dr. Jessie Sanders, a leading expert in pet fish care who has used almost all of the above products during her career. As one of only 10 board-certified fish specialists, Dr. Sanders is very familiar with the routine tasks of fishkeeping and tries to guide her clients to the best and most effective equipment to maintain a healthy environment for their wet pets.

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