S
stonescafe
with a 600 watt bulb you will need a 6 inch carbon filter and ducting
a 600 isnt really enough for a 5x5' tent, but i would veg em for a week under the 600 and then flip em. make sure you have the fan and filter set up as well.
VG
how long did the soil sit before you planted?
you should let any soil sit and rest before planting. think of it this way. when you mix all your ingredients together, there is going to be a lot of chemical reactions going on at first. things getting locked up in the cation exhance, things getting eaten and becoming microbe biomass and much much more. when you let the soil sit these things have time to balance out, putting a plant in early is like throwing a kid who has lived in the mountains for his whole life and throwing him into one of the most populated cities in the world, and then tell him to feed himself. at first he might struggle but eventually hell get the hang of it. same goes for your plants. they might grow slow at first, trying to find what it needs when things are being used up or moved around so much. but once everything is in balance its like giving the kid a guide book or a mentor. the soil takes care of everything.
This was about 1 month ago,
This one is today,
This one is lst,
This ones supercropped,
same plant as one on top, http://s749.photobucket.com/albums/xx133/xxitzeugenexx1/?action=view¤t=IMG_20101204_111350.jpg
That first pic you posted clearly shows what looks to me like a zinc deficiency. To be specific, the outer edge yellowing, and the new growth also looks a little funky, like rosettes. It's especially apparent on the plant in the lower right side of the pic. Another sign of zinc deficiency is slow growth/small plants, which is the clincher for me.
It is probably locked out, but hard to tell.
"High ph, Low organic matter, High Phosphorus levels in the soil, and or lack of nitrogen."
Check out this thread. Scroll down to check out 'zinc deficiency'
https://www.icmag.com/ic/showthread.php?t=11688
HTH ~
I noticed the deficiency as well but noticed it seems to have been resolved. I am not familiar with soil so cant help you there. I can tell you I veg under T5 and my plants would be much much larger than that after 3 months. Something is up.
65-90 is a little too much temp swing IMO. You can get a temp controller like this to turn your vent fan on
http://www.pricethattool.com/produc...-Thermostat-PT-6-by-LL-Building-Products.html
they are available at home depot, lowes has something similiar.
I also noticed you said 3 gallon pots. IMO 10 plants vegged fully in 3 gallon pots would take up more space than a 600 can cover