Hello guys, I have a 55 gallons salt tank.. I moved it and made the mistake of using the same sand bed.. ever since then I’ve had phosphate issues.. I’m in the process of buying a new tank. I’m getting a 90 gallon and moving everything from my 55 gallon into it.. gonna buy new sand and everything just gonna keep the live rock and fish and coral. Have some live rock and some base rock., there’s some green hair algae on some of the rocks so before I move them I want to be able to clean it off and clean the rocks... what’s the best way I should go about this ? I saw stuff about spraying the rock with hydrogen peroxide and then rising off with salt water from the tank, but then I’m still worried about some phosphates hanging around inside the rock and being released once I put them in the new tank... what’s the best way I can clean these rocks and both get rid of the algae and phosphates.??