So...
I have a 100L tank with 2 mollies, 3 platties, 1 small catfish, 20 or so guppy and molly fry in a net breeder, and until today 7 guppies. All the guppies are dead or dying except for a brand new one I got on saturday! PH is too high but don't have any PH down left.
The other fish are all...