Diy half moon 20 gallon

[Lazhar]

I am interested in your led driver design.

Its a really simple design I found online. I used 20 leds from eBay 10 royal blues and 10 cool whites. and made 4 bundles of 5 each to turn them on at diferent times. They are 3 watt each and take 700ma at 3.5 volts. So I power them from a 20 volt 3.5 amp laptop power supply. The LM317 is not very efficient onless you keep the input voltage and output close but leave the 3 volts it uses itself. The way I have it setup they only get warm, so they are working very well.
Them I power them separately with relays. To get one royal blue on at 8:30, one cool white at 9:30, the rest on at 10:30 and then they turn off in the oposite sequense.

 

[maddmaxx]

sweet build right here

 

[Lazhar]

kool man...... really liked ur design.....

sweet build right here

Thanks a lot guys, I was a lot of fun to build. I have it half full of corals already and is looking pretty sweet. Now I have to fix my other tank. This one makes the other one look like sh.. :headwally:

 

[Lazhar]

Quick update, the tank is doing great.

 

[mejamis]

PACKED with corals!!!

 

[sharklaser]

she's a beaut

 

[Lazhar]

Update

Update

Tank is a already a year old so an update is in order. Tank has done great and its been lots of fun keeping it going. So easy to keep compare to my 110. Ok here go a couple of pics.

 

[MattDiaz]

Awesome build! I want one like that for my 10 gallon half moon.