I'm curious as to what these are... they are hard and come off relatively easily when I clean the glass.
They are everywhere on rockwork and in my sump. The only place I physcially remove them is the back glass but they continue to come back.
What are they and is there any detriment to having them in my tank?
Thanks,
TL
They are everywhere on rockwork and in my sump. The only place I physcially remove them is the back glass but they continue to come back.
What are they and is there any detriment to having them in my tank?
Thanks,
TL