I have a non-planted tank with manzanita and slate rocks (my zebra pleco tank). I do not fertilize the tank (a 34 gallon corner tank with a 42W CFL bulb for lighting). The manzanita has been in use for approximately 4 years. About a year ago I moved the tank and the manzanita was dried out during the two week process. Once I set up the tank again, I noticed a grey colored, cotton like, patchy fuzz that developed on the non-lit side of the manzanita. My assumption is it is some sort of fungus. The fungus never happened prior to my moving the tank. To keep it at bay I have to scrape it off the manzanita every other week or so, but it keeps returning. None of my clean up crew (amano shrimp, MTS, and LDA025 plecos) touch it. I have no evidence that it is harming any of the tank inhabitants, but I'd like it to get rid of it as it is a nuisance cosmetically and maintenance intensive.
I just cleaned it yesterday so I can post a follow up picture in a week or so.
Any thoughts?
I just cleaned it yesterday so I can post a follow up picture in a week or so.
Any thoughts?