Hello Everyone! It's always good to be back around here, always good info to learn. In my latest post I was concern about one of my molly been sick showing what it looks like "fungus". Well she is gone, but my biggest concern are the ones that stay behind, they are showing some signs that I can't compare to none of your pics, but for some explanation can be some kind of fungus, they last for a long time (months) but it looks like only affects my gold lyretail mollies, because the tank had others (platies) and they seem fine, not affected (two females lyretail are gone in the past 6 mo, the one sick is a female too) I know it sounds funny all the female thing, but the two female adults were bought with a male and he seems perfect, they deliver and now one of the offspring is the one showing some signs. Now for what I think is the good part, my husband agree to buy me a second tank and I want to know what you suggest, and the reason is because, as you advise tank is full of little ones, platies I think and they are between 2wks - 1month and I want to know if I should move the affect fish to the 10 gallon for meds or should I just med the whole tank, can the meds kill the frys, what med should I use, went to Walmart and find some tabs Jungle "Lifeguard All in One Treatment" tabs. and I have acces to a Petsmart also. Please anything that can help, regarding raising the tempeture I live in Puerto Rico, water tempeture is around 80 all the time and that is when outside is no a hot day but it can go up to 86 and I have monitor them and they seem ok, this last with the exception of them two no lost in the last 7mo., I am also doing weekly 50% water change. Again anything is deeply appreciate. Thanks as always!