cant answer the airstone question but thats what i would do. just use the airstone. i would assume the airstones little bubbles would cover more surface area.
do u think the lack of c02 is had a differance in the plants getting so tall? im having the exact problem. i venilate 24 hours a day to make up for no co2.
yeah thats why i posted it. hoping one of these guys or girls would have something more to say. and some math comparing lumen to watt ratio of these lights and a 1000w,
soo all the hydro store i have been to in the past couple weeks (4 of them) have all been talking about some new 750 watts hps light. i guess it puts the lumens of an 1000 but the cost of a 600 or close too. i was wondering if anyone has heard of them or tried using them? thanks