for what??? there are 2 stages to growing marijuana. Vegatation and flowering.
Veg. is when the plant is growing as much as it can ( as many branches and as tall as it can). when you switch the light cycle to 12/12, it then is in flower. sooo in Veg, you want the "Blue" CFL's...when you switch to flowering you want to use the " orange/red" cfls.
But yes, a red will work