I'm in hte middle of my first grow and all i have is a couple buckets with 4 inch circular air stones...i'm only using 2 gallon buckets..5 will be much better.. just adjust hte water level once your roots start growing..Almost all my roots are sittin in the water since i'm only using 2 gallon buckets but from my understanding you want as little of hte roots laying in the the water as possible..5 gallon buckets should help that..i dripped some water (turkey baster)from hte top a few times a day in the beginning until the roots started to show..Not sure if its a must but probably didn't hurt...However it may mess up your PH a little bit..make sure you soak your hydroton and rockwool before you start...or whatever it is you use..

Check out my thread if you want.. The thread name is "Opie I need your help friend"

Hope this helped a little..

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