Both. I have a 250w MH light (I made the housing) I also added in four 10" (10 Blue LED's per strip)
The 250w MH is a 20k, so with that and the LED's I get alot of blue, but it really not to much. In the video is seems like alot, but its really just right for my taste.
The MH stays on about 9hrs a day, the LEDs are on 24/7 but they have a dimmer that gets turned down to low light about 2 hrs after the MH turnes off and gets turned up to full brightness about 2 hrs before the MH comes on. Here are some pics of it to kinda give you an idea how I did it.
Oh, and thank you for the comment. i love the clam to.. I ordered another clam for that tank, its colors are light blue and white, so Im looking forward to that.
And the piece I think you are calling the carpet ane (brown) is a elegance coral. That piece is special as its a piece that was fragged off another elegance that had been in a guys tank for 20+ years. So its one that is very healthy and dont have the worries other people are having with the elegance corals that are on the market.. Or if you were talking about the green piece in the front, that is a open brain coral. That guy is cool. has 4 mouths and always loves to blow up and show off..
Thanks again

outside housing, may change the way its hanging, made the hanger for another light, then changed my plans halfway thru. But the housing is 17 1/2 x 14 1/2 wide.. Took some time to bend all the metal just right, but got it how I like it. Nice edges. Since its on a cube 30x30 tank, I wanted a light that matches the tank in shape.

Inside the light. There are four 10" LED lights (10 LED's in each strip) and a 250w 20k MH. This picture only the LED's are on (half power). I had them made and they are all wired together, so only one plug needed with a built in dimmer..

This is a pic of the 20k 250w light just turning on, so its still warming up. The LED's are on also as you can see..
And the way I designed the light, there are no cooling fans needed. If you look at the first pic, you can see all the air vents on the top half of it. This lets all the heat escape without needing a fan. I can have the light on for hours.. touch the top and there is no heat build up. Worked out great.. Believe it or not, the top half of the retro fit light was made out of a attic vent you would put on a house, then the bottom is sheet metal bent around the light. Easier said than done, but worked out just like I wanted it. But still thinking of changing how it hangs. Woeks for now, but may make the bars tighter into the light so they dont show up as much..
