Aquarium Gear Guides

Last updated: November 2026

Equipment buying advice aimed at one goal: never being caught without something on the day fish get sick. We keep gear talk short and practical — what a device has to do, the numbers that matter, and what to have on the shelf before an emergency, not after.

Best test kit (liquid vs strips)

The one kit that explains 80% of symptoms. Honest comparison and testing schedule.

Best filter for a betta

Low-flow options that don't shred long fins or exhaust small swimmers.

Ich treatment supplies

The shelf checklist: medications, salt, thermometer, aerator — and dosing rules.

Why is my filter so loud?

Match the sound — gurgle, grind, drip — to its cause and a 10-minute fix.

Live plants for goldfish tanks

The species that survive a goldfish, and the feeding habit that protects them.

The five pieces of gear that prevent most emergencies

  1. Liquid master test kit — ammonia/nitrite/nitrate/pH. Everything on this site assumes you can read those numbers. (Kit guide.)
  2. A reliable thermometer — stick-on strips are approximations; a $6 digital probe is truth. Target tropical 76–80 °F / 24–27 °C.
  3. Air pump + airstone — the fastest intervention for gasping fish and blackout treatments. Plumbing it permanently is cheap insurance.
  4. Dechlorinator, sized for two full water changes — every change, no exceptions.
  5. Gravel vacuum — weekly 25–40% changes done properly prevent the cloud, algae, and ammonia problems this site indexes.

Severe cases: consult an aquatic-experienced vet where available.