Bio cube experts help me out

There's four switches on top for the lights....when I turn on one of them a fan seems to come on...what's that for?
 
Cooling off the bulbs but only when you have all the lights on , or the 10,000k day light on that's how it works on my biocube

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+1, I changed the bulbs around so they came on/turned off with the actinic lights instead of the whites
 
Cooling off the bulbs but only when you have all the lights on , or the 10,000k day light on that's how it works on my biocube

Sent Via the R2R Forum APP

So you can have all he lights on at the same time?
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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  • Other (please explain).

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