I have a 48" flourescent fixture that takes a single 20-watt bulb with a smaller-type socket...or at least the bulb itself is narrower than the regular flourescent bulb (I'm using this to supplement the main 110w CF fixture). Does anyone have a suggestion for the best replacement bulb that will give me the best light for plants? Or should I just take whatever I can find?
Thanks...
Those are rather odd numbers; a 48" fluorescent bulb is usually 40watts (T12) or 32 watts (T8). Is it really a 20watt bulb?
Sounds like it could be a T5 or T6 bulb. I know there is a 34 inch 21W T5 and a 42 inch T6 thats 25W...
Honestly manytanks... whatever you can find over 5,000K will do fine.
Thanks, guys. Yeah, I know the numbers are odd, that's why I asked. The rating on the ballast says "20 watts" and it is a 48" fixture. I think the bulb is way past its rated life, so I need to replace it. Will look around to see what I can find and report back...