I just did a water change and added nutes a few days ago. Question? Should i just psyphon out some water and add back fresh RO? Until I get the ppm's to drop to around 750-800? If i do that should i keep that water i psyphon'd out and add it to my next water change? Maybe 1 gallon is all i will have to psyphon. My rez under the buckets is only 4 gallons. Thanks guys!