it could b the nutes or sounds like your light is kinda powerfull for 4" lol
i rekon u need a smaller light and it needs to b closer but i could b wrong
got any pics??
i am changing my water 2moro but i need to know for future refrence wot ur best ideas are on (ph up)??
i got ph down but put too much in:neutral:
it was on 8 so i put 1 1/2ml of ph down in and it went straight to 2!!
any help???