We have just started a new tank (as in 4 months old). We complete the full cycling as directed and started stocking fish. Everything was going good and fish looked great. Last Sat. I noticed white spots on 1 of our fish so as directed by LFS I started treating for Ich. We did 25% water change, took out the charcoal filter and added medication. Started to raise temp to 80-81 degrees and took out a dwarf frog we had as I was told this treatment would not be good for him. Ich started to disapear and things were looking good. Tuesday I noticed our pleco started to turn white??? As mentioned on the bottle I went ahead and decided to only do a 1/2 treatment to lower the amount of med to help with the pleco. I came home Wed. to find an awful smell from our tank. We noticed the Pleco was died, lying on the bottom the of tank and honestly looked like he rotted away completly?? Was this from the Ich treatment or something different? We then noticed that one of our dwarf barbs was also dead but his body looked health? We decided to only do another 1/2 treatment as most of the Ich seems to be disapearing, however noticed that 3 more spots showed up on our Gouronmi today. This morning (Thursday) we found 2 other fish not looking so good. 1 dawrf gourami is hovering at the top very lathargic and the other is a platty that seems have slimmed down ALOT and most of it's fins are gone? I tested the water and it shows the PH is good, the Alkalinity is at the highest (but was told thats from the Ich treatment) The Nitrites are 0 and the Nitrates are between 20-30. I couldn't test for the ammonia as I ran out of the testing stuff, I will pick some up today. We are planning on a water change as I was told to do one after 3-4 days of treatment to help ride the parasite in the gravel. I am hoping that it will help with the water as well since we have dying fish???
What else can we do as I'm not sure it's just Ich????
55gallon Tank with undergravel filter (2 Tubes. w/charcoal), 2 Power heads to help with water flow
1 Gold Gourami, 2 Blue Gourami (babies), 2 Dwarf sunset Gourami, 1 Dwarf Paradise Gourami, 5 Dwarf Tiger Barbs, 2 Rosy Barbs, 1 Tinfoil Barb, 1 Redtail Shark, 1 Bala Shark, 4 Platty's, 1 Glass Catfish, 6 Tail & Fin Healights