just got done with the hole cutting and have 4 13 site 30 gal rubbermaids and have dual air pump with two 18in bubble curtins the pump puts on 2800cc it just doesn seem to put out enough bubbles.... what is the pump/airstone combo i will need in each tank....... ty ty ty
You need at least a 1000L pump or many pumps equivalent to 1000L.
30 gal is big though and I've never gone over 50L bubblers but in them I used 600-800L and it worked fine. As for airstones; never been a problem for me. Just the fact that the water is moving is making it aerated.
So it might depend on the dimensions of the container but try to spread out the stones.
Keep the water level even with the bottom of your net pot until you get roots shooting out, then keep it about 2 inches below after that and you'll be good.
i wont be using it for long i just finished germanating a couple new ones i used a folgers can cut hole in the top one site bubbler hope it works just untell i can put it in the drip system i have