I'm having a serious issue with one of my tanks and I have no clue what is going on.
Some of you may remember the my HMPK dragon Tinsel having issues when I first got him. He was showing signs of SBD soon after arriving from Thailand so I treated it as such. He was touch and go for a while but pulled though. While I was treating Tinsel in his cup I moved him into the tank that held my other HMPK Baloo. I broke down Tinsels tank just in case, cleaned it and set it back up. I decided to keep Tinsel in Baloo's tank and put Baloo in the new one. Everything seemed fine at first. The next morning I noticed that Baloo was sitting on the bottom and his fins were clamped. When I checked on him again in a couple hours he was floating on his side at the surface, just like Tinsel. I quickly scooped him up and put him in a cup with some clean water. Sadly he didn't survive the night. I broke down the tank again and sanitized everything I could. I threw away the live plants and gravel. I set the tank back up with all new stuff and let it run a couple days and then tested the water to make sure everything was normal, everything checked out ok. A couple days ago I put my VT Kestrel in it. Yesterday I came home to find him acting the same way as the other two. He died today
So here is what I do know...It's not the water, all my other fish are fine. The only thing I think it could possibly be is the gravel and the reason why is it's live plant substrate. Maybe I got a bad batch or something, like to much fertilizer. The stuff I have is called Flora-max. I read reviews and couldn't find anything bad other then it tends to be cloudy. I rinsed mine multiple times until it ran clear. I feel so terrible
. I just wish I knew what was causing this.