Sunlight Suppy Tek Light 8 bulb, 4' HO T5 fixture. REVISITED 6 MONTHS LATER

[kwirky]

Originally Posted by fkshiu

I simply aimed a small fan down the length of my old Teklight providing active cooling. This also provided additional evaporative cooling of the tank itself during summer.

I've got that going on, too. a 120cfm fan. But what I meant by active cooling is cooling the bulbs through removing the warm air INSIDE the fixture, like the ATI unit does.