Hi Spish
I've always been able to keep guppies but not mollys. Our water is hard at pH 8 to 8.5.
Recently a guy at my lfs said to put a pinch of aquatonic salt in the filter media and repeat after rinsing out the media. I currently have 3f and 1m molly doing well and have already dropped one lot of fry.
Some other people suggest a brackish tank, which, I believe increases the water hardness? I think, correct me if I'm wrong, that guppies can be kept in brackish water too if they are acclimatised slowly by adding a little more marine salt at each water change.
Just a thought.
I've always been able to keep guppies but not mollys. Our water is hard at pH 8 to 8.5.
Recently a guy at my lfs said to put a pinch of aquatonic salt in the filter media and repeat after rinsing out the media. I currently have 3f and 1m molly doing well and have already dropped one lot of fry.
Some other people suggest a brackish tank, which, I believe increases the water hardness? I think, correct me if I'm wrong, that guppies can be kept in brackish water too if they are acclimatised slowly by adding a little more marine salt at each water change.
Just a thought.

or maybe the stores all get their stock from the sam source and they have a parasite at the source or smething