ph levels

My friend has two betta fish. One of them died today. We can’t figure out what’s going on so I seek help here. The symptoms are: -not eating (it’s been a week now) -swim bladder -stays at the bottom of the tank and only goes up for air My friend has tried everything, epsom salt baths, treated...

i have two betta males in separate 5.5 gallon tanks. Both tanks tested high for alkalinity and slightly high PH. I know a ph swing can be harmful so how can i lower the alkalinity (and in one case soften the water) without drastically affecting the pH level?

So we just got a new 125 Gal Tank. We've had tanks for years and years but never one this large. The possibilities are endless! The water directly from faucet reads 7.4pH, but after sitting for 24 hours it levels off at 8.2 pH. Because the tank is so large, we want to get fish (or creatures)...

Hello! I'm new here and looking for some answers as I am incredibly stumped. If you are prepare to read a long thread, I will be incredibly grateful for your time, effort, and (hopefully) advice!   I have a 5 gallon tank that houses 1 Betta, 2 Oto cats, 3 amano shrimp and 3 assassin snails (that...