Just a bit of an update. Put a pc fan up as the exhaust of the cooltube and it's working great, pulling pretty strongly and allowing me to move the light down closer to the plants a good amount. As smell starts to become an issue I'm going to put in a carbon filter and probably a better exhaust fan if it has issues with pulling at that point.
Skoad - Thanks for the comments! I'll definitely checkout your grow. The cooltube and the HPS are crazy. My plants absolutely love the light, so bright and perky. Hopefully you'll be able to get the correct ballist somehow. Best of luck in your grow!
hey man how much water were u feeding them in the 3gallon pots with 1/4 dosage of nutes? please let me know.. i fed mine after transplanting into 3 gallon pots a whole gallon each with a 1/4 dose nutes of grow big only
In veg, after I transplanted, I was feeding them 2 gallons of water over all 5 pots at 1/4 dose every 2-3days (pretty much every 2 days once they got to about a foot tall) starting off and working up to a full dose with each feeding by 1/4 steps, feeding with ever other watering only. Now in flowering they get 2 gallons over all 5 every 2 day, with feeding every other watering still. All I really look for is nice moist soil and no heavy leaks out the drainplugs on the bottom. Once you find the right amount you start to be able to tell from the weight of the pots as well.
Sizes for my pots go: four 3- gallon pots and one 2 gallon that was being used due to space issues. Having the one smaller pot made everything easier and allowed the addition on an entire plant which otherwise would have had to stay in veg as a mother, but I'm going to use one of the clones I took from my best looking plant as the mother instead now.