Holy sh*t - my plants have exploded

Extremely pleased with these babies, the growth in the past week is incredible. I've never seen such compact plants before - then again I haven't grown in 10 years (and only did a few bad grows back then!) - I check them every 24 hours and swear each time I do I can see the growth.

I'm running flood and drain system which floods and drains every 4 hours. Ionic Hydro grow at 1.6EC/5.7pH. They're under 2 x 600MH and 1 x 300W CFL (6400K) They've been topped once (at 3rd node)

I'll keep them in veg for another 2-3 weeks, then flower them.

I think for my next grow I will put a tent in that room, I feel I'm losing light due to the excess space to the right where the fan is.

Cheers,
J.

How are you liking those ionic nutes in the flood and drain? Are you using hard water/tap water? Also do you have to add ca and mg? Ive been going back and forth ok either house and garden or ionic and for the price and simplicity with the ph stability as well with ionic I think I may go that route for now. Thanks in advance for your input