For some numbers, I have the LED's about 6" off the surface of the water the top of my rock work or the tips of the green acro on the left are getting about 325 PAR, the Rastas also to the left are 250 ish, and the sanded varies from 80 to 100. These values are straight from the clubs apogee PAR meter. I have set the Apex to ramp up the blue channel to 75%, and the white to 50% over about an hour, then it stays there for 8 hours and ramps back down over about 2 hours.
I have only had the lights in operation about 10 days, and I have a few immediate observations. The Jason Fox Witch Hunter monti LOVES these lights, I think I can see it growing in front of my very eyes. The algae that grows on the glass has been reduced by 80%, most likely due to the light being so focused down onto the rock work. My black background also seems to have faded into the back even more, I am sure also due to the focused light no longer illuminating the glass panes themselves.
I'll make sure to update the thread as my tank grows, I added several new frags this weekend from a local swap, and so far everything is HAPPY!
Good evening everyone, it has been a long while since I posted anything on the boards about my tank! I am still in the hobby, recovering from a case of LARS (Lazy A** Reefer Syndrome) where I did lose quite a few corals. Unfortunately they were the SPS that are hard or impossible to find, the old school ones.
Anyway, I have moved away from the metal halide/led combo and went 100% LED using these AcroStar pucks. I decided to go with the 1/2 Mega, 8 3W emitters on a 2" puck. My first plan was to use my existing power supply and 6 of the pucks, but that didn't work as the power supply was to small to drive all 6 properly with the LDD drivers. (The supply was 36v, 150W max, and I was pushing that to the edge, with no success.)
With that plan not working out, I upgrade my supply to a 45v 350W version and ordered 2 more of the pucks from Yann.
I couldn't be happier with the results!
Here is a list of what I am using: 45V 350W Power Supply from Amazon 2 LDD 1000 mAH Drivers 2 LDD 700 mAH Drivers 1 AcroIQ Micro Driver (Also from Blue Acro) This thing is NEAT, and TINY https://blueacro.com/acroiq/ 1 Voltage dropping thing from EBay, 45v in, 12v out to run the fan and 1 O2 Surplus 0-10V to 5v PWM converter board 8 Half-Mega 18k Blue https://blueacro.com/acrostar/ PCI cooling fan from Amazon 36" Makers Slim Heatsink
The emitter itself, still in the plastic. Really well done, looks like a full on commercial production product, not something designed and built by a hobbyist.
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