hey bonger, i am getting a ph/tds, i just don't have it yet. i'll also be getting an industrial air pump.

the link didn't work, let me see if i follow you so far... the holes and gromets go at the bottom of the bucket? the hose connects three in a line, then you conect those lines to gether for one drain system?

sorry, but i just don't see it. if i can find a decent pic, i'll have it down, i just can't figure out how you circulate water and keep the water level even at the same time...