ph34r New Member Jun 6, 2012 #1 i was curious as to how long these bulbs are good for or usable for thaty matter i got one with a tank i bought and the bulb is very old from what i can tell
i was curious as to how long these bulbs are good for or usable for thaty matter i got one with a tank i bought and the bulb is very old from what i can tell
ataraxia Avid Member Jun 6, 2012 #2 If you question the bulb..replace it or you can buy a uvb meter and test it.