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Blow toward the sink. You want to move the very thin surface layer of hot air.
Also, in your other thread you mentioned adding the cardboard hood to prevent blinding from the side. You might want to consider optics... You'll be able to run your lights at lower power, they'll last longer...
I've had good luck with fish from Live Aquaria and Pacific East. I haven't lost a fish from PacEast, but relatively many from Live Aquaria... Yes, they always credit, but I don't like animals dieing on their way to me. I've since switched to LFS. You can see them eat first, etc.
I have taken them apart, they use six-wire pots if I remember correctly, I think one set of three is the dimming, the other for the fans. I'll probably fix them once they die altogether. Until then, running @ 50%.
I have a similar fixture, only it's white + blue. I really liked it when I first got it, I much prefer the high-watt LED + external optics vs the cheaper (older?) lights with hundreds of tiny 1w LEDs.
Three things: 1) the dimmer on my blue channel went flaky, so that it sometimes flickers...
That's quite a beast! Funny, back when I was more PC-based, I looked down on Mac users... Now I wonder why people running Windows even do these days (tongue in cheek)... Non-unix is a such a second-class citizen in so many areas of computer science at this point, it seems like it would be really...
I built this one a while back:
12g RAM, 256g ssd, quad core i7. Good times.
Just replaced it with a Mac Mini, and happy I did! Though I still have the case, with slot-load DVD where the floppy used to be. :-)
I upgraded from an MP40 to the Sicce. :-) The Sicce is silent, vs the MP40. And the Sicce is like 1/3 the price. I have a few MP10's, I like them. The bigger ones are loud. And you can't point them anywhere but straight.
+1 on Sicce. I have a pair of them (the BIG ones) and they've been making waves via Apex control without a hiccup. They have electronic directional control, so they start the right direction.
Just start them LOW. I was worried about having enough power, but I ended up with >300 par on the sand in a 31" tall tank. Which means I have spots with 8-900 par, which clams love but cooks anything else. You'll love 'em when you're done.
The last thread like this, I recommended Apex. I have one, a reef friend down the street has one. I have recommended it in the past. I had an issue with it resetting, and he had the same issue. Resetting as in: it loses all programming and resets back to defaults, so if outlet 1 was your heater...