Quote Originally Posted by Bringonthedoom
within two hours easily. the tank is just a sterilized rubbermaid bin. yeah im using Advanced nutirents mix of Grow,Micro, and bloom. and ive got it pulling water up from the res in four tubes, one to each lady, they water through the hydroton then drip back into the reservoir. this is my first set up so if im doing it wrong let me know lol

What EBG said. Just substitute Hydrotron wherever he says rock wool.
Othewise, his advice is sound enough.

H'tron needs to be heavily pre-rinsed.
If you see any "orange dust" at all, keep rinsing.
Then you need to acid condition it for quite a while, then rinse again.
At least that is what the h'tron makers advise.

I did all of that and then some.
The PH just kept creeping up regardless.

Way too much work fo' dis lazy guy.
I quit using rockwool and hydrotron.
Now I use coco coir.:thumbsup::thumbsup::thumbsup:.
Stand alone, and as a root holder for DWC.

Wanna buy 45 pounds of Hydrotron?
Cheap! to a good home.

Aloha,
Weezard