Hey guys!
So I’m planning on deep cleaning my tank and sump this weekend. My question is, what is this that’s growing in the inside of my sump? It’s also on the back of my tank. I had a little power head in my tank when I got it but I took it out and it too has this crud built up on it. Also, How should I go about getting it, and the algae that’s in my return section, out of the sump?
So I’m planning on deep cleaning my tank and sump this weekend. My question is, what is this that’s growing in the inside of my sump? It’s also on the back of my tank. I had a little power head in my tank when I got it but I took it out and it too has this crud built up on it. Also, How should I go about getting it, and the algae that’s in my return section, out of the sump?

I seeded my reef with purple helix if your looking for some coralline. It worked well.

