is there like a chart, or formula that will help me predict how hot my teeny weeny tank will get with a HQI at said height?
i wish i had a formula for eveything
okay. question series:
Jack, do you sell those?
how often do the bulbs need to be replaced?
roughly how much do the bulbs cost?
can i turn on just the actinics, and just the daylights, or do they have to go on @ the same time?