Good day all. Have a question here on a problem I’ve had now for over a week. Fish originally came down with ich and I treated it. From what I can tell, it’s cleared up however they developed a secondary infection and I’ve been trying to treat and it seems nothing has worked. This far I’ve lost 2 tin foils, 3 clown loach, 3 bala sharks, and an electric blue. Remaining fish other than a tin foil seem fine and are eating. Water levels are at 0.00 and ph around 7.3. Medication I’ve tried is Melafix, fin and body cure, and now I’m on maracyn (day 2) My tin foil still hasn’t shown any improvement...swims like he’s lost, won’t eat, and eyes still looking a bit cloudy. Fins are a tad ragged too. Any ideas as to what the heck this might be??