Cool, thanks. Do you have to do a res change every 7-10 days even if you have a huge tub, say 10 gallons for each plant? Thats a lotta water and nutes, but I guess the end result is worth it (If you go cheap you grow cheap). I wanna put all your podcast shows on a psp or somethin. Very insightful-

If anyone is having trouble getting that nasty mix from the very bottom of the res...Look no further.

Type in karosene pump in ebay.
Pretty sweeeet