I have a 3x3x6 Apollo tent,8inch exhaust,dimmable 1000w ballast,1000 platinumax hps bulb, the big easy 3 gallon coco,jack herer 1 gallon coco,I'm using a 3 part nutrient from advace,Ph perfect Bloom,Ph perfect micro,Ph perfect grow.i have a ec/ppm meter,n ph meter.