White mold on my filter?
Hey, I have a 20 gallon tank with a very small Green Terror in it. I've had him for a few months now and he seems very happy and is growing at a nice rate. I don't feed him a ton of food so I'm pretty sure that there is no over feeding. I change the water and the filter carbon/cotton every other week.
Today I noticed a puffy white mold like substance growing on my filter. I have never seen this before and have no clue what it is. The mold is not in the water, it is surrounding the inner portions of the filter above the water line and has grown a touch out of the small vent like things on the filter cap.
I am using a Whisper power 30 and have had no problems up until this white puffy stuff. I use water conditioners when I change the water and keep the ph level at or around 6.8-7.0
My fish seems happy and healthy but I am concerned about the mold, my nephew has pretty bad allergies. I had an issue with Ich a few weeks back but that is ok now.
Any help would be appreciated
It looks like cotton growing on the filter casing, it's not growing in the water. I suppose it could be mineral or calcium deposits, but not sure.