Sk3lly
Aquarium Advice Addict
I couldn't see anything on those pic's which is why I asked. Black and slimy, was it also in like a sheet form? When you rubbed it off did it peel off or did it just dissolve into the water the way diatoms do when you wipe them off?
Ok i will get a better photo of the bits i couldnt remove. Was scared of uprooting my anubias as ive recently moved it. Not really in sheet form but patches and splodges. Yes dissolved exactly like diatoms. What do you reckon?