Recent content by wld1783

Hi What is the PAR Rating of your light? Given the corals in your picture and the lack of coraline algae in the back, are thoes brand new tanks with corals just added?

Do not use watts per gallon... Its not MH or T5 and even then consider the reflector... I've measured PAR of Cheap Chinese Imports at slightly over 130 watts with a killowatt and apogee Par Meter around 250 PAR in free air and then I measured an american fixture at 150 watts with over 700 PAR...

LEDs will definitely lower you electric costs with a standard tank. A 60 LED fixture driven around 750mA will produce over 400 PAR with the right optics at 24" and use under 200 Watts 70 Degree Optics Driver Input........PAR@24?........PAR@24?........Watts Volts DC...........Center...

+1 Also I'm using a Cool White PAR 38 LED over my fuge and macro algae grows well. Spent lots of time scuba diving and below 30 feet things get blue or cooler in colour temp quick. The algae adapt. If your unsure the XP-Gs normally run a bit warmer than the XR-E Cool White. Bill

Joe I recently tested a 60 LED Fixture with optics and measured 432 PAR at 24" with 70 degree optics. The LEDs were Cree XR-E driven between 650 and 800mA. Here's a link to the write up. http://www.reefledlights.com/how-to-diy-led/optics-evaluation/ BTW once you go LED you never go back. Bill

The 60 I tested are not frosted. I was surprised by the results but the proof is in the pudding... Currently I only recommend the 60 if you want to keep light off the glass/acrylic..cleaning issues... IMHO the 70 and 80 rock as they really snap on and don't need an adhesive. Here is a link...

Will Do. Toss me a pm with an address. Bill

+1 I was thinking of doing the same, then a friend asked me to build a 6 foot fixture with a housing to replace 3 250 watt MH fixture that was simply too hot and heating up his tank. Plan on doing the same with a complete build. smog I only have 12 bad ones as they seem pretty reliable as...

Here are some hard numbers I did with a 60 LED build I did recently for a friend. I tried to post the info earlier but maybe the pics were to big The Fixture is a 24” x 8.46” from HeatsinkUSA. I used 12" LED Strips instead of individual stars for a cleaner look and a lot less work soldering...

With 24 LEDs Cree XR-E say a 1:1 mix of Cool White and Royal Blue driven at 700mA what coverage are you considering.... The same coverage and PAR as a 10K XM using a spider light reflector? When you say only 24 LEDs are about equivalent to a 250W MH what optics and how are they driven as there...

smog Very nice build!!! I really like the housing and how you did the drivers. btldreef Rapid Led is correct on the equivalent light but the spread is off. LEDs rock but they dont have the same spread as MH using a Luminax or Spiderlight reflector. Here is a partial copy of a post I did...

smog Outstanding DIY Nice work. btldreef As far as number of LEDs I hope this partial copy of a previous post helps. I like to see around 250-400 PAR for my corals here is a a fixture I built for a friend and some PAR measurements with and with out optics. It covers a 36"x24" footprint...

+1 You dont want to use the 12volt setting. I adjusted the max current of the driver at 9v to 750mA. This way when its on a controller and 10V or full power, you will be well below the 1000mA the XR-E LEDs are rated for. Bill