Hey so Right now i have a 150gallon res that has 2 500gph pumps in them, and each pump has a 1/2in pvc line connected, that feeds up to a 8x4. and Im using 4 (4way) dripper heads per 8x4. and from each 4 way is connected macro. So Im dripping 32 per tray, but my problem is at first everything...