Hey guys:) I'm sure you guys are tired of this topic but Im fed up cause i dont know what to do anymore. Ive got a 300L tank with lots of LR and a sump with DSB. A protein skimmer Dymax (rated 700L). When i came back from holiday (after a month) my sand and rocks were covered with red slime algae.I have removed most of it from the sand but the rocks are difficult cause it starts drifting everywhere. Im starting with water changes like always but will weekly water changes really help? Im planning on doing a 60L change. Last year all my corals just started dissappearing and i just want to get my reef up and going again. Please any suggestions :)