Looking for tips for growing in Hydrotron...please

Any tips for how often to water in Hydrotron would be great. I am using and ebb and grow system. 24 plants under 3 600w's. I have used ebb and flow with coco in the past and it only needed one watering per day. How many times should i be watering with straight hydrotron, and how many times with a hydrotron/gro-dan crouton mix?

Also, anything else i need to know about growing in the medium would be awesome, or links that you may know of.

Thanks guys!

PS: I should add that i started off with 16 inch vegged plants. And the plants look droppy a bit, and the leaf ridges are bulbous. Been watering 3 times per light cycle.

I thinks its usually every 3-4 hours but then again there a variables like size of the plants and temp of the room.

Anyone else that can offer some tips...

jakes right.. every 3-4 hours and double(6-8 ) if using grodan too.. but also depends on plant size and room temp. listen to your plants and they will tell ya