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New DIY LED build
Flying and LEDs. Seems I spend more time doing the LEDs on my days off its full time and when I fly I take care of emails and calls between flights. Good thing I only fly three days a week. Both Me and Rick are looking forward to sponsoring next month. Mojoreef As far as the PAR readings...- wld1783
- Post #82
- Forum: Do It Yourself Forum
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Multichip LED build questions
Looks very interesting. With my personal tanks, I'm very picky when it comes to spectrum as there is a huge difference between different Cree XP Royal Blue and Cool Whites. Could you provide more info on the 100w multichip. Thanks Bill- wld1783
- Post #4
- Forum: Do It Yourself Forum
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New DIY LED build
Thanks I used this link Product Review: A Comparison of Two Quantum Meters - Li-Cor v. Apogee — Advanced Aquarist | Aquarist Magazine and Blog the other was broken. Looks like the Electric reads slightly lower than the Sun setting. Looks like I'm getting more light than advertised. Bill- wld1783
- Post #77
- Forum: Do It Yourself Forum
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New DIY LED build
They will grow your corals but their thermal management is limited. The Heatsink is small and I've heard of people complaining about noisy fans. If the fans fail the LEDs will soon follow. This was noted by Evolution in a different post when someone wanted to pull the fans to reduce noise...- wld1783
- Post #76
- Forum: Do It Yourself Forum
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New DIY LED build
Most vendors sell you what they have in stock which can change from month to month. The reputable ones will let you know what bins those are. Only a few will sell a specific Bin and to do so costs more. As far as the PAR meter I've always used that setting because thats what it defaults to...- wld1783
- Post #71
- Forum: Do It Yourself Forum
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New DIY LED build
The setting was on electric. For comparison a sunny day in Chicago at noon gave me a reading of 1505 PAR. As far as the Bins the Cree Cool White has a range of 5-8K. Each production run is measured and assigned a Bin. The above picture shows the extreme variation Bins 0A and 3B If you simply...- wld1783
- Post #69
- Forum: Do It Yourself Forum
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New DIY LED build
The 59 is 12 XP-G Cool White without optics. The 324 is with Carclo Ripple Wide. Given previous PAR Testing I was surprised by the out come. Here is their chart that may explain increase. For me Optics are a "Force Multiplier" They increase the PAR (focus the light were we want it) and...- wld1783
- Post #66
- Forum: Do It Yourself Forum
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New DIY LED build
Here are the test Pics...Hope this helps. My Apologies on the multiple posts Bill- wld1783
- Post #63
- Forum: Do It Yourself Forum
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New DIY LED build
I've been sitting on some information that may help...Not all Cree Cool Whites are the same... Bins really mater. Here is a comparison of a warmer vs cooler Bin of the XP-G R5 Cool White along with PAR comparisons of optics. The test fixture was placed on top of the acrylic top 30" tall and...- wld1783
- Post #62
- Forum: Do It Yourself Forum
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New DIY LED build
Yes...Rough equivalent....Many factors but hopefully I can post PICs now.- wld1783
- Post #60
- Forum: Do It Yourself Forum
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New DIY LED build
Based on my PAR Testing and Optics 24 LED is the rough equivalent of a 175-250 watt MH Bill- wld1783
- Post #59
- Forum: Do It Yourself Forum
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New DIY LED build
Hi I'm new here so forgive the multiple posts... Tried to post some pics. IMHO Its best to compare MH to LEDs. Bill- wld1783
- Post #58
- Forum: Do It Yourself Forum