All my water stats are fine, Ph is around 7 to 7.5.
I've got 5 neon tetra, 3 mollies, 3 platties, 4 cories and a few baby mollies, platties and swordies, plus 3 baby guppies.
The trouble is my adult guppies all die, at first they were fine and I had one for about 6 months, but over the last...