I've a 2.5 gal acrylic bowl that is filled with 2 gals of water, small heater, 2 silk plants, glass beads on the bottom, and a male crowntail betta.
When I do a water change (100% weekly), the pH is always very low. After the water change, it's normal.
I don't have a filter.
The acid is eating away his little fringies, poor thing, and his tail is splitting.
How do I take care of this problem so he'll grow back to his former splendor?
At the moment, I use the chemical test for pH. In the past, I used the master test strips that test all conditions. The only ones ever out of wack were the pH and alkalinity.
What to do?