Growth rate

[pizazmitaz]

i was going to buy red and blue ones and maybe put them on opposite sides of the tank, but put them at the bottom. Would doing that not make them grow out of control like i've heard?

heres the lights:

Nova Extreme Pro T5 High Output Lighting Fixture - 6 x 54W - 48 in.

http://www.thatpetplace.com/pet/prod/239340/product.web

it's a 55 fowlr then reef