airstone can be relative. I use a 5" disc w/ an ecoplus comm1
making teas, i use this in tandem w/ another ecoplus comm1 running an airlift in a 5 gal bucket. but, I've been messing around doing cal~phos foliars and making kelp~falfa sprenches using just the disc airstone lately
making teas, i use this in tandem w/ another ecoplus comm1 running an airlift in a 5 gal bucket. but, I've been messing around doing cal~phos foliars and making kelp~falfa sprenches using just the disc airstone lately