I started with four balls in a 4 gallon tank. I had two gangster snails that didn't survive, so I started testing the water quality. I noticed that my API calcium test showed no results at all. Repeated and got the same results. There is no calcium. I added more balls and tested the water again. Calcium readings on the test are still missing.
ACCU-CLEAR Water Clarifier for Freshwater Aquariums - Quickly Clears Cloudy Water, Ideal for Weekly Use
9 Review
12 Count Greenpro Root Tabs Fertilizer Tablets: Ideal For Aquariums, Ponds & Water Gardens!
26 Review
Tetra AquaSafe tap water treatment agent, 5 l
11 Review
🐠 API Stress Coat Water Conditioner | Tap Water Safe, Repairs Fish's Protective Coat, Use for Water Changes, Adding Fish, and Injuries
9 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
🧲 Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review
Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review