
With every water change I have had a serious problem with die off in the aquarium. It turns out that I have very soft water that cannot effectively buffer the PH, so changing the water will cause the PH to fluctuate. I had 2 fish left in my 90 gallon tank and every time I added more some died on the next water change. Since using this for the past 6 months I have restocked up to 30 fish and only lost 1 (which appears to be due to transplant shock). Update: I've been using this on 90 gallons for 2 years. and a 20 liter tank. I've reduced the frequency to about every 1.5 to 2 months (your need will depend on the condition of your tap water). I ate 1.25kg in those 2 years so compared to what I spent replacing dead fish that's a lot!

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

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review

🐠 U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review