i want to grow vegetables using the lights, watermelons, tomatoes etc, stuff that has loads of water., so i am guessing whats enough for that is enough for the plants everyone grows here, and ill be using a 15 x 15 foot room

so lets say i want to get cheap lights at a local store instead of some crazy over priced hydro punk chop shop, im looking at t5s and t8s.

the set ups i can get range of normal or HO light rigs that are t5s and T8s come in size and watts configurations such as:
2'23w, 1x or 2x or 4x
4'36w, 1x or 2x or 4x
6'58w, 1x or 2x or 4x
I can get most t5 or t8 rigs that hold 2 bulbs for around 10 bucks used.
I have the space and want to put 4xrows of flos in 3 sides, then lay a aqua tray and hand load the water to grow spinach etc, sort of the way people built racks and use the aqua trays for clones where they put the bulb as close as a inch from plants.

So i am asking what gives the most potency, which bulbs etc, the one link from ebay shows a red and blue bulb ONLY, is that efficient or a marketing scam?
illuminatica Reviewed by illuminatica on . Which t5 or t8 bulbs? Hi I have a friend who is using a T8 florescent set up that comes as a 2x36watt 1.20cm aka 4 foot. he installed 2 philips bulbs, 1-Philips TL-D Super 80 Triphosphor 4' T8 36 Watt Fluorescent Tube 36W # 865 6500K Daylight bulb, 4 Foot Fluorescent Tube 36W 865 Daylight (Philips) 36 Watt 2-Philips MASTER TL-D Secura 36W/840 1SL Rating: 5