No problem Jim.
Bad choice of words from me, "limiting 3.7 amps". I was in a hurry when I wrote that... I'm sorry. Looking back I see you're using 63 diodes per 2' section of tank. I was comparing it to the original 48 that was sold when I got into them years ago.
For me, I needed to add more LED's than the original 48 per 2' length of tank space. When Bill originally was selling DIY LED, he claimed 48 LED per 24" length was equal to a 250 watt MH. If comparing "PAR" it probably is more than a 250MH. But "where the rubber meets the road", I burned some, while others starved. I had challenges getting the "punch" where I (the anemones) want it. On my heat sinks, I added more, between 67 and 74 total, and then I still, recently, added 5k 21 watt spot led for even more. My anemones are more light demanding than most sps, and I found my original diodes are missing spectrum that other lights put out. I haven't added mine up, but guessing I'm in the area of 6 watts vs. 3.7 watts like yours.
I think you will be happy with them. I've been on the fence with getting a couple newer ones, mine are all getting pretty old now. It seems the newer ones have captured more of the spectrum, but I'm still nervous to pull the trigger on an expensive light when what I have, as outdated as it is, still works. The anemones I have are typically found in very shallow water. It seems the yellow/white light make them look the best health wise, but not the cool deep actinic blue so many strive for. I think you will be happy with them overall. Depending on what you're trying to grow where, you may see a little difference in growth/color. I didn't mean to sound negative with them, I was in a hurry when I responded earlier.
