Wots pH ?
Wots TDS ?
Get a fan blowing gently on those plants.
Move those lights as close as you can possibly get them.
Why 3 plants in one Waterfarm ?
Rockwool cube should be covered. You do not want light on the roots.


Save yer money, get ya a HPS to flower with.

Search Weedhound and Xcrispi posts, they grow some nice crops using the Waterfarms.

And, IMHO, two things you must absolutely have to grow 'dro is a TDS meter, and pH tester. But, what do I know Incorrect pH when growing in hydro means yer plants get zero nutes ! Doesnt matter what nutes you use if the pH is out of whack. Here is a chart for you to take a peek at. Notice the optimum pH for your plants to uptake nutes is ~5.8. Since those Waterfarms have such a small volume of water in them you might need to pH down a few times a day.

http://boards.cannabis.com/attachmen...0&d=1121829312


Growin green,
b0nger