Green film algae


Premium member
I went on vacation a couple of weeks ago. Came back to tank covered in green film algae, on the rocks, sand, and glass. I scrape the glass and stir the sand, and next day it's all back. I can easily use a turkey baster to blow them off frag rack, back glass, and rocks. Any treatment? Nitrate and phosphate are both 0. Running chaeto, Phosguard, skimmer. Feed once a day. Been doing weekly water changes.

Corals are loving this though. SPS colored up, some zoas growing out of control.