Thanks Ryan. Now if those 2 emeralds would just eat a little more, this thing wouldn't be so green with hair algae and turf algae.
Bad news.
The PC light fixture is HOT AS HELL. :grumble:
I'm going to order a pair of 25mm computer case fans and a 40mm case fan tomorrow. I plan to put one 25mm fan on each end of the fixture and arrange them so that they blow air INTO the fixture. The 40mm case fan will be hacked into the top of the fixture to pull hot air OUT.
The 25mm fans move 1.93cfm and use 0.05amps. Thats 50 milliamps each. 100 milliamps total.
The 40mm fan moves 4.3cfm and uses 70 milliamps.
That gives me a total load of 170 milliamps. I got an extra 12v wall charger that I used to use for charging a 12v gel cell battery. We use them for our field tool box while flying. Run fuel pumps, charge airplanes, charge glow igniters etc... It has a 600mah output @ 12v. I plan to just plug it into the timer and set it to come on when the lights are on. It should handle a 170 milliamp load for 10-12hrs a day...no problem. Thats not even 50% duty cycle. We all leave our cordless phones plugged into the wall charger 24/7 and they don't melt. I can't imagine pulling 170 milliamps out of a 600mah wall charger would melt it or cause a fire hazard.
My fixture has little round plastic tabs on each end that can be punched out. Sorta like an electrical box with the round tabs that can be punched out. Each of the tabs on my fixture just happens to be about 25mm in size. Perfect for the computer case fans. They should screw in pretty easily.
I'll have to cut a hole in the top of the fixture for the 40mm exhaust fan. No big deal. I got hole saws and access to a drill press. 40mm is just a tick over 1.5" and I just happen to have a 1.5" hole saw in the airplane shop. I'll just punch a hole in the top of the fixture and screw it on.
Nothing left to do but wire them up off the wall charger. Should be an easy fix.
For now, I've disconnected 3 of the 6 lights in the fixture. Without a load on 3 of the ballasts they won't produce any heat, so this thing should run at the same temp it was before I stuff all this stuff in there. I'll have to run it like that until I can get the computer fans and do the mods.
I'm a little bit frustrated, but it's not like I hadn't thought about the extra heat. I kinda knew it was gonna get hotter with 3 more ballasts and 3 more lights in there. I just didn't expect it to get so hot. It's gotta be 130F on the outside of the fixture. I can't take a chance on running it for 8hrs while I'm at work tomorrow. Don't want to burn the apartment down.