Can’t tell what this stuff is. Red in color, slightly fuzzy and doesn’t blow off with turkey baster blast. Haven’t tried scrubbing. Was hopeful it was the start of coraline but I doubt it?
Thanks. Very hard to zoom into this back panel of the tank so apologies for bad photos. I’ll try to get some clearer pics.
Thanks. Very hard to zoom into this back panel of the tank so apologies for bad photos. I’ll try to get some clearer pics.