I am getting a brown algae looking growth in my Ebb and Gro resovoir. I assume because I am using Fox Farms (yes the hydro version)? Either way, I just purchased an RO filter to bring my out of the tap 330PPM water to 0PPM. Once I have enough water from the RO filter I am going to clean out my resovoir. Can anyone give me tips on the best way to do this with the Ebb and Gro? I was thinking pump the water out to the yard, wipe as clean as I can, flush with plain water once, H202? (not sure of the application) and then refill with RO Water and re-nute. Also thinking of making some of the tea from the recipe I found here to make the bene nutes. Any help/advice appreciated, this is my first hydro grow. been in dirt for three years. Thanks for all the awsome info in this thread folks, it has saved me alot of grief!