Need some tips, DWC grow, pics inside.

Here are a couple of pics, will try to get more on soon but my digital camera is acting funky...

two of my best looking plants are starting to get a ton of roots and things are looking good for these two... any time table on when i should start giving them nutes and how long til they start to flower?

I just switched from lights on all 24hrs and the past two days I have gone 20/4..

you can start feeding them now bro but do it @ 1/4 strength at first and work your way up.
oh and you might want to lower the lights more so she dont have to stretch so much man.

heres a pic of mine in a dwc and shes already eating @ 1/4 strength.........