- Reaction score
- Just started
I recently had added six zebra danios to my 20 gallon tank, then shortly after doing a ~20% water change 3 of them had died. So I went to my LFS to buy a few more, then after doing another water change another one has died. I have two honey gouramis which have been completely fine with the large WCs. Are these water changes killing my danios? How much and how often should my WCs be then?