Originally Posted by iamgray
Eep! Yeah I will do my best to remove everything that has that stuff. Do you think I should try to switch out the sand as well?
I'm not sure where it came from... I haven't added anything new to my tank. I don't know if the timing was just a coincidence or would it have something to do with the water change last weekend? At that point it had been about a month since my last water change because of all the crazy overtime I worked all through May (the joys of seeding season when working for a seeding equipment company). The stuff appeared a couple days after the water change. But my filter was honestly disgusting... sludge of decaying plants when I opened it up. I'm willing to bet that was the main culprit...
If I add pimafix to the water will that help at all with the fungus? Does it actually help to get rid of fungus?
It is the white sort-of fuzzy substance that I assume is fungus of some sort. There are I don't know how many species of fungus in the world, some is toxic, some not. But the reaction you described previously of the fish remaining near the surface, then returning to normal right after the water change, then beginning to stay near the surface plus the increased respiration is a certain sign of something toxic in the water. And this assumed fungus fits the bill.
As I said, I saw something like this when I put a new (previously dry) piece of either Mopani or Manzanita wood, or it may have been grapewood, in my 90g. It took maybe a day or two, then the fish began respirating fast, the corys became lethargic, and the water was slightly cloudy...I did a 75% water change and took out the wood (which had some whitish fungus leeching out from it), things went back to normal. I know of other local aquarists who had fish losses from this.
No idea where yours may have come from; the sludge in the filter might be part of it, I had a fairly sudden outbreak of cyano bad and traced that to not cleaning the filter often enough. Cyano is organics-related, this stuff may be similar.
I've never used Primafix, and I would want to be certain it would target whatever this is before subjecting the fish to more substances, and that is something I cannot say.