Question about lighting.

[chaualain]

I've been using the "36" Glo T5 HO Fixture Double" with two 39watts Power-Glo (http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=19760) bulb. I'm planning to have some low-light (1.95wpg) plants, but i'm not sure if this bulb is fine?

if not what other kind of T5 light sound i get? there is so many haha. I was looking at these http://www.drsfostersmith.com/product/pet_supplies.cfm?c=3578+3733+13821
and I'm also confuse about the "T5" i know the "Glo" Series bulb will fit mine.. obviously but will other T5 Bulbs fit my fixture?

[Veloth]

I'm no expert but every time I gotten bulbs for my lights the only thing I've needed to know is the length and the spectrum I wanted.

[Star_Rider]

the T number basically references the bulb size(shape T-tubular and diameter 5 = 5/8)

so any T5 bulb will fit the T5 fixture as long as you have the appropriate length.
the HO however, means you have high output. usually indicates the ballast is rated for higher output(or something like that) ;)

if you run the NO T5 on the fixture you may be overdriving the bulbs.