heat stress? or nutrients? no clue need help

Wsup ppls i just started growing. Got my own place and bored so i got sum bomb seeds lol. First i used floodlight 50watts. But read on floodlight that its to much heat. So its a month old now and i just barely changed it to a 42 watt cfl bulb. Soooo im trying to get more lights im not finished yet. But when i used the floodlifht i seem to get these yellow or brown thing on leaves. But that i had the floodlight for a month and it never happend till now i saw yellow n brown so i changed it. Wuts the problem? Im planning on growing 3 more. To total 4. Wut shuld i do? Sorry if this sounds confusing. I want it to b short n hella bushy n bud but it looks to me like its to tall. Its like 7 inches or 8 tall.

That's Phosphorus deficiency. You should also check the soil pH if you haven't yet.

O ok. Ill check asap. Frm what i looked up i can find a soil tester at walmart? So with anyone experience how many bulbs and watts each shuld i use for 4 total plants. Help me out asap.

Hey DB! I'd forget walmart this time of year they probably won't have them in stock. Lowes or Home depot will and this is also a great source for lights. HOWEVER, I'd check where your closest local garden center is an go there. They'll have a ph/soil tester for $10 and a smart staff--which is an invaluable resource. If you have questions for them tell them you're growing tomatoes. While you are there ask them for some foxfarm nutrients: Big bloom and Grow big (use 1/4 strength solution .)

How much space and coin do you have to spend on your lights? For an economical solution I'd go with some fluorescent t8 garage fixtures with 6500k t8 tubes (bulbs). Which will run you around $26-$52 depending how many you buy (one or two fixtures plus $6 for a pack of bulbs). Anyone at home depot can help you find these. I like them for vegging 'cos they are a cool light/blue and you can get them in 6500k (veg) and 2700k (flower). They are easy to mount and plug in and cover a large area:

http://www.homedepot.com/h_d1/N-5yc1vZ1xhf/R-202052422/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

...You could also go with t5 bulbs (smaller and better) but ready to plug-in fixtures are hard to come by so you'll have to mount them to a board or something and put in a little more elbow grease.

Or you can go with some clamp lamps that support 300w CFLs (for about $10 each) and a couple 300w CFLs (you can find them in the big box in the CFL aisle). For four plants you're going to want 2 at least, maybe 4 and keep them confined so as to avoid light leakage:

http://www.homedepot.com/h_d1/N-5yc1vZ1xh8/R-100354517/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
http://www.homedepot.com/h_d1/N-5yc1vZ1xhf/R-100676712/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053

Thanx ixoye. About my space i have i can have a full walk in closet but as of rite now im kina using my kitchen and my stove fan as the fan lol. Pretty smart i think. And money im kina in a budget cuz just had my second kid. And my monthly bill of electricity is 20 bux at the max. I dont want a big or long long lite. Maybe sumthing that can screw on or small but alot of watts maybe fine.