Good Evening All:
Thought to share a new LED build.
Pucks built from 2-7 bead base plates per heat sink.
Outer loop is 3-3watt full spectrum LED's, 3-3watt 10K white, and 1-3watt 2.7K in the middle.
42 watts per heat sink.
Mounting box coated with shellac for each sink.
Fans added to each if needed.
3 units added to an existing canopy.
Holes drilled in end of each mounting for air flow.
LDD drivers used, 1 for each sink.
PS is at 48VDC, all 700mA drivers.
PWM is attached via 9 pin serial din.
Remotely located StormX controller, about 12 meters of cable.
Lighting start up.
One bad 2.7K bead caused a lot of blinking and aggravation.
Resolved with a 6500K, will need to change though.
Tank is in a state of mess due to driftwood, another topic.
2nd use of full spectrum LED's, 1st was a success.
Costs incurred were LDD's(3) and 4 position board $27.
Heat sink and PS were re-purposed from work and shop.
LED's and base plates $25 from China.
StormX was pre-existing and will also be used for additional aquariums.
All in all not bad for a little over $50 USD for my free 75G.
In the end StormX will be running many tanks, 2 @ present.
One downfall to the StormX running multiple tanks is the ramp and photoperiod will be the same for all involved tanks.
PWM with twisted/shielded cable can go some distance though.
Mention of fans, thought they would not be needed.
Heat sink temps were running @ 125F, right on the boarder.
Applied 4 volts to each 12 VDC fan and temps came down to 95F.
12 VDC PS is now running 3 fans in series full time.
At 12 volts each they were extremely noisy, now undetectable.
Comments and suggestions please.
Thoughts for improvement are always welcome!
Will update with some PAR readings in the future.