My purple fire fish died a couple of weeks ago. He was looking thin and didn't do well with the reduced feedings I've been giving to combat some hair algae. Phosphates and nitrates have been good. Triton test reported 0.01 phosphates, which is a little lower than I'm getting on my Hanna. The triton test also reported elevated tin, which is why I'm guessing I can't keep shrimp, and snails die relatively quickly in my tank. Doing some research, it appears new PVC can leach organotins into the water, which can be toxic. The triton test read 8ppb of tin. So today I've added another phosban reactor for GAC. If it's organotin, the GAC should help take some of it out.

With the nearly undectable nitrates and phosphates, I think my hair algae issue comes down to too few herbivore, so today I got a Starry Blenny. He seems to already be at home in the tank, and was munching away!

2015-09-27T17:47Z[GMT]