So I got my tank about 2 months ago now, it is a 30L tank. I started with a Betta which got fin rot (being a new fish owner I didn't notice) and had died within a week.
I since bought a betta, 2 mollys, and had 6 cardinal tetra.
The new betta then got fin rot, I assumed he was stressed when the other fish got added, so I added the medicine which I had, from before. And I thought I had cured it.
Then a week later I noticed my tetras had all developed Ich while I had been away for only one night and one had already died.
I went to the pet shop and got a medicine for that, came back and did a water change and added it. Within 2 days all 6 tetra were dead
(. I then noticed that my betta has either got fin rot again, or not quite recovered. The medicine for the Ich says you need to add it for 7 consecutive days, although now all my fish which had white spot are dead, can I stop that and add the fin rot medicine?? Although I'm worried if I do that the others will all get Ich.
I can't add them both at the same time can I?!
I also think I'm doing something wrong, I also just noticed that one of my mollys has got a popped out, white eye. I went to get my water tested at the pet shop but they said it was all ok.