I also just set the lights from 20/4 to 18/6 maybe this will help as well. and flushed my roots with some clean poland spring. i also have hard water ppm is up there my calcium is through the roof, i ussually just go light on the nutes, dont have a ppm meter cause ever time i went to buy one i had other thisng to get like a blower or carbon filter and they cost like 50 bucks i would ebay one but my mom would kill me haha :smokin: my ph is yellow i think thats about 5.5 6.0 and it goes up every 2 days to about 7 and i pull it back down to 5.5.