i went to the LFS and got the powder called erythromycin. they said it would take care of the red slime. is it safe for reef tanks???? i have clam, hard and soft corals. should i proceed???? by the way, i do water changes every week and my phosphate and nitrate levels are low when tested. the only thing was that my alk was way low. i use salt water purchased from the LFS. should that matter??? they say it's filtered seawater. lights are on 10 hours daily and current adequate as my coral move with them.
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