studioac
Aquarium Advice Newbie
I have a 90 gallon fish only tank with rocks, shells, and ceramic decorations and crushed coral substrate. No live rock. It's been running about 3 months. Water parameters good and fish are fine. Protein skimmer and UV sterilizer working well. Have some diatoms but they seem to be decreasing. Now more green algae in substrate and green and purple algae growing on rocks and decorations. My question is, I know that for FOWLR setups some algae is good, but what about fish only tanks? Should I scrape off the algae or leave it? Any benefit to having the algae in a fish only system? I don't like Ge brown diatoms but don't mind e green and purple stuff.