1st grow

ye the main top leaves are like dark green but some of the more smaller ones on the inner part of the plant and some of the tops are turning yellow i really need to get you some pictures up as its a tad hard to explain the strains i have are cheese afgn kush and double berry the all seem to be darl leaved plants i have been wondering if the food was lacking in nitrogen hence the yellowing its been a bit tricky as ive been without the net to do any reserch but im back up n running now ill get pics up tomorow hopefully will make it easier to get aanswer

sorry this is the lamp i use http://cgi.ebay.co.uk/HPS-LIGHT-BULB...item56390c47db

It may be a little late to add much N. But you could since your flowering cycle is really just beginning..
They dont sound sick, and your shouldn't panic when seeing just a few yellow leafs. They may have stem damage and are not pulling and nutes. They will wilt off and fall away.

I have a plant with a odd yellow leaf in the middle. Im assuming wind damage and it may of took more beating from the fan then others..

hps, tends to yellow plants sometimes. Toss in few CLF. Dont need a lot them. Just may even out the light spectrum some..

its not a hot spot from your foil is it?. Foil may reflect hot spot from lamp, but I dont think thats the case..

dont panic..

ive been rotting my plants around the room itself every time ive waterd them change the position of them so they all get a even balance of light theyre now in the 2nd week of flowering so shouldnt be to much longer pics will defo be needed for this thread lol

moving them around will cause leaf damage. its natural though.
I get those one that tie themselves to others and I need to yank them out to free them. ripping leafs most the time. .

well ive given this set up to the guy in the flat below me as ive moved house theyre nearly ready for harvest and looking good but unfortunatly i wont be seeing them again :'( where ive moved to has a basement and im starting again but doing a different set up wich is this one http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWNX:IT what i want to know would i benifit from growing less plants so they can get bigger or would i get a bigger turn around with the full 12 and roughly what kind of yeild could i expect?

I'd say; fewer, bigger, better!>)

was thinking of doing 5 at a time

I'm being a bit thick today so what do you actually get in that kit? Tent light reflector grow medium and ferts.
If you can hit 1/2 per watt your doing ok 1 gram per watt your doing better then average and anything over the gram your at the cannabis god level.
I'd aim for 10 plants grow till i've 3 1/4 filled the floor area with plant mass and then bloom.

you get the pots and timers and drip feeder also im thinking of sticking 2 600s in there its a 12 tub kit but was thinking of doing just 5 at a time this will be my first attemt at hydro growing so i was also wondering how often do i have the feed drip into the pots ?