Not cool, I had a strange white hairy fungus growing off my bio filter, so I chucked it.
I figured id be ok since i have to filters in my tank. Unfortunetly I had forgotten that i had gotten rid of my other one earlier for the same problem (but at least the molds gone!) so I woke up this morning all proud of my beautiful tank, only to find it cloudy (its not too bad) and one of my barbs dead. everything in the tank (even the frogs) seems pretty normal, but I'm pretty sure its a mini cycle. (i threw the filters away about 3 days ago i think) And as for my lvls, i dropped my test tube on my foot last night and it exploded (ouch.) so I'm gonna have to go to the LFS tonight after work, and ill prolly bring some water in for them to test...
