Buying task · Maintenance tools
Aquarium maintenance tools
The routine Merck lists for a home aquarium, the tools each job needs, and the wear parts to watch: batteries, airline tubing and air-pump diaphragms.
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Short answer
A home aquarium's routine is short: look at the fish, the temperature and the equipment every day and remove uneaten food, and change some water about every two weeks, more or less depending on stocking.[1] The tools follow from that: a gravel vacuum and bucket (or a faucet changer), an algae magnet or scraper, a test kit, and spares for the parts that wear, such as batteries and airline tubing.
What the routine is
The Merck Veterinary Manual lists monitoring water quality and a regular schedule of cleaning, water changes and filter replacement as part of preventive fish care, and says new water should be dechlorinated.[2] It also describes using a water and vacuum system to remove waste from the gravel during water changes.[2] Its maintenance table puts daily checks of fish, temperature and equipment, plus removing uneaten food, at the top.[1]
| How often | Job | Tool |
|---|---|---|
| Daily | Check fish, temperature and equipment; remove uneaten food | Your eyes, a net |
| About every two weeks | Partial water change and gravel cleaning | Gravel vacuum and bucket, or a faucet water changer; water conditioner |
| As needed | Clean algae from the glass | Magnetic glass cleaner or algae scraper |
| Regularly | Test water | A liquid test kit |
| Periodically | Check wear parts | Spare batteries, airline tubing |
The decisions, in order
1. How you will change water. This is the biggest tool choice. Aqueon's siphon vacuums run from a mini 5-inch tube, listed for 1-5 gallon tanks, to a large 16-inch tube.[3] The water changes and testing overview compares siphons and faucet changers.
2. How you will keep the glass clean. A magnet cleaner works from outside the tank; a scraper reaches into corners. We have not yet found verified maker data on scrapers, so choose by your tank's glass or acrylic and its size.
3. Which wear parts to stock.
- Batteries. EHEIM says its autofeeder must run on alkaline AA batteries, not rechargeables, and that after it shows "LO" it shuts off within about three days.[4] Aquarium Co-Op says its Auto Feeder's built-in battery lasts 3-6 months per charge depending on use.[5]
- Airline tubing. All airline eventually hardens in water, Aquarium Co-Op says; cut off 0.5-1 inch of hardened tubing before reattaching.[6]
- Air-pump diaphragms. Tetra says a Whisper pump that stops producing air or gets very loud may have a worn rubber diaphragm.[7] Replace or service the pump as the maker advises rather than opening it.
Every page on maintenance
Guides
- Aquarium maintenance checklist: daily, routine and periodic
- How to prime a gravel vacuum (without using your mouth)
- 3/16 in vs 4 mm airline tubing: sizes, materials, hardening
Tool and tank pages
- Tank setup finder: upkeep and automation gear by tank size and type
- Nano and betta tanks, 10-20 gallon, 20-40 gallon, 40 gallons and up, rimless, hooded, planted, shrimp, fry and grow-out and several tanks on one pump
Shortlist. Not yet. Nets, scrapers, planting tools and other maintenance gear are still open: we have no verified maker data for most of them, and we would rather say so than list them.
How to choose
Start with the water-change tool for your tank size, then the glass cleaner. For a small glass tank, a small magnet cleaner handles the front glass between water changes.
Keep grit away from a magnet cleaner's pads when it touches the bottom, and wipe the pads before you use it on the glass again.
Key terms
Water change, gravel vacuum, water conditioner, airline tubing, alkaline battery and diaphragm pump.
Everything in this topic
Guides
- Aquarium maintenance checklistGives you a maintenance routine built on a veterinary schedule plus the equipment upkeep the makers describe, so automation does not hide a problem.
Tools
- Tank setup finderTakes you from your tank's size or type to the feeder, aeration, water-change and timer choices that suit it, with a source on every field.
Common questions
What should I check on my aquarium every day?
Merck's maintenance table lists daily checks of the fish, the water temperature and the equipment, and removing uneaten food. It takes a minute and is the step automation cannot do for you. More in Aquarium maintenance checklist
How often should I change aquarium water?
Merck's general schedule is a water change every two weeks, with the amount depending on how heavily the tank is stocked. Python recommends 5 to 10% every other week for its users, which is a maker recommendation. More in Aquarium maintenance checklist
Why has my airline tubing gone hard?
Aquarium Co-Op says all airline tubing eventually hardens when left in water for long periods. It suggests cutting off 0.5 to 1 inch of the hardened end before reattaching it. More in Aquarium maintenance checklist
My air pump got louder and weaker. Is it broken?
It may be worn. Tetra says a Whisper pump that stops producing air or gets very loud may have a worn rubber diaphragm, a wear part not covered by its warranty. Contact the maker rather than opening a mains-powered pump yourself. More in Aquarium maintenance checklist
My tank is between two sizes. Which page should I use?
Use the larger size for aeration and water-change tools, and the type page (rimless, hooded, planted) for feeder mounting. Maker tank-size figures are suggestions, not measured limits. More in Tank setup finder
Where do the tank sizes on each page come from?
From the makers. Tetra offers its Whisper pumps for aquariums from 10 to 100 gallons, Fluval lists its A202 for tanks up to 80 US gal, and Aqueon lists its mini siphon vacuum for 1-5 gallon tanks. These are the makers' suggested sizes, which we show as stated. More in Tank setup finder
Does the finder tell me how much to feed?
No. The Merck Veterinary Manual says feeding rates vary with species, age, system and water temperature, so no page here gives feeding amounts or a safe time without food. More in Tank setup finder
Why do some fields say "Not confirmed"?
Because we could not find a maker, standards-body or published source for that field and that tank. We show the gap rather than guess. More in Tank setup finder
Questions
What should I check on my aquarium every day?
The Merck Veterinary Manual's maintenance table lists daily checks of the fish, the water temperature and the equipment, and removing uneaten food.[1]
How often should I clean the tank?
Merck lists a regular schedule of cleaning, water changes and filter replacement as part of preventive care, with a water change every two weeks whose size depends on stocking. The maintenance checklist sets it out by day, routine and period.[2][1]
When should I replace airline tubing?
When it hardens. Aquarium Co-Op says all airline eventually hardens when left in water for long periods and suggests cutting off 0.5-1 inch of hardened tubing before reattaching; replace runs that stay stiff or crack.[6]
My air pump makes less air than it used to. Is it worn out?
Possibly. Tetra says a Whisper pump that stops producing air or gets very loud may have a worn rubber diaphragm, a wear part not covered by its warranty. Do not open a mains-powered pump; follow the maker's service advice.[7]