i think a 400W would be too much (heat wise) for that grow tent. Plus i m trying to keep running costs down.
My grow shop doesnt carry a dual-spec 250W, so i ordered the Phillips SonT+.
trying to find out if the SonT plus has blue in it, so i dont have to get a Halide.
Because the tent is 1.60m in height. The pots are 25cm (height), the reflector another 25cm, plus i need another 20-30cm (the distance between the lamp and the plants).
If u add it up, i have about 60-70cm left, for the plants. This means, that i got to grow them bushy. No space for too much stretch, otherwise they can overgrow the tent during flowering.
Thats why i need to see if this lamp has blue in it.
Found a thread of a bloke who uses a 600W SonT+ for both cycles and the plants looked very nice! Bushy and healthy (hydro set up).
http://www.420magazine.com/forums/jo...anna-coco.html