i have a coralife power compact double 65w fixture i finally found a full 6700k bulb for my plants but it is only a 55w bulb is it ok to put that in the 65w fixture?

bump

 i dont think it will be a problem

me either but im no expert in lighting.

r u sure the 55watt is a powercompact and not a t5? 48in t5s are normally 55 watts while powercompacts are 65watts.  If so then no.

A 55w bulb will run on a 65w fixture. The bulbs are interchangable. Why they ever made two different wattage bulbs, of the same length, is beyond me. From what I've read a 65w will run at 55w on a 55w ballast, and vice-versa.

If it helps, I run a 55w and a 65w in my dual fixture. Both look the same intensity to me and they work fine.

I know all-glass makes  a 55 watt pc bulb

thanx guys that helps now if anyone knows of any good places to order pc bulbs from for my freshwater plants i need 6700k that are reasonably priced let me know the bulb i found was from coralife and its $30 it is straight pin too

Mmmmmm good question. I've tried eBay bulbs, and they suck. So you might just have to pay up for some good ones.

yeah was afraid of that the best ive ound so far is dr fosters and i KNOW there has to be something cheaper out there lol