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Clear, sourced answers to the questions aquarists actually search for - water chemistry, fish health, live plants, algae and equipment.

55 Guides published
6 Topics covered
Emergency aquarium water change with a siphon and an ammonia test tube
💧 Water Quality

How to Lower Ammonia in a Fish Tank Quickly

Ammonia above 0 ppm is an emergency. The water-change math to bring it down fast, why pH and temperature decide how toxic a reading…

Aug 26 · 8 min
Partial water change on a planted freshwater aquarium with a siphon and bucket
💧 Water Quality

How Often Should You Change Aquarium Water?

A water-change schedule by tank size and stocking, how much to change at once, and why nitrate (not the calendar) is the number that…

Aug 24 · 8 min
Planted aquarium with clear water and a test tube, illustrating how to cycle a fish tank
💧 Water Quality

How to Cycle a New Fish Tank

A new tank has no bacteria to process fish waste, so ammonia builds until it kills. Here is how to cycle a fish tank,…

Aug 20 · 15 min

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