hiya palerider thanks for the info re ph. I've since been doing a bit more investigating and found that perhaps the root growth with aeroponics may not be as much as with the bubblers etc, i came to this conclusion as i've been looking at other systems where they use the big pipes for holding the plants. i don't understand how the roots don't clog the system when they don't have much room to grow in great length in those pipes, ie clogging the misters or sprayers, as the pipes are only so much in diamater. SO i'm thinking that they maybe don't get that long/big with aero?

I've grew in soil for a few years and a bit of a newbie to the hydro concept, but hope that my setup will work ok. I'm going to try having a separate res for the water/nute mix with the pump in it and have the pipes going to the seperate tanks holding the plants so that the misters and sprayers are the only other thing in the tank apart from the plants, and the run off going back to the seperate res via another pipe.

I don't have any pics of my setup just now as i don't have a dig camera, i might try the camera on my phone to get a few pics and post them soon if they turn out ok. My setup may look a bit guerillaish, but basically i've had to work with what i could get my hands on for as little cash as poss as funds are limited and can't afford to splash the cash too much. i basically used my old cold water tank and drilled some holes in a sheet of thick fibreglass for the net pots, used some 22mm pipe and compression fittings to hold the misters and sprayers, and the pump sits in the bottom of the tank, and some total blackout over the top to minimise light getting into the roots. recently got two more pumps to expand my setup as i need to start flowering soon, so i'll be buying another couple of plastic tanks, prob 90litre ones and a sep one for the water and nutes and pump.

what do u think? sound any good, its when you look at the price of what an aero system costs, i've managed to kinda build one for a fraction of the price, and get more plants out of it too, hopefully anyway!!