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Recent content by Chopper Greg

  1. 460 nm vs 420 nm

    To a very real degree, "Yes". That is ( an excessive amount of light in one part of the spectrum ) something that I have always had a problem with while researching lights for greenhouse use, and the reason I have always disliked about HPS lights. In my research of greenhouse lighting, one...
  2. 460 nm vs 420 nm

    I'm not so sure. :| I can live with some spikes as long as the critical wavelengths are there and if the CRI is decent, and sulfur bulbs have anything but a decent CRI. When used in commercial applications the green tint has caused repeated customer complaints, and while bulb life is...
  3. 460 nm vs 420 nm

    Have you looked at Ceramic Metal Halides? Some of them offer a comparatively even spectrum: Here is a graph comparing a Phipps MasterColor CMH to HPS http://www.growlightexpress.com/images/cmhvshps.jpg What I don't like about sulfur plasma bulbs is the huge green spike.
  4. Introduction & question

    Thanks the welcome. Leftovers, Are you sure about that? It seams to me that actual average water depth ( or at least average maximum water depth ), should be more of a determining factor, rather than tank depth alone - granted using the total tank depth does provide for some fudge factor...
  5. Introduction & question

    My personal thoughts ( with my dream tank :P ) are extending to having several MH in the 150-250W range*, with them coming on sequentially in 30 min intervals*, and then after being on for 6-7 hrs* turning off in the same sequence - individually they are not going to put out allot of light, but...
  6. Introduction & question

    Allow me to introduce myself- My name is Greg, and while I do not currently have a reef, I spent several years working in a fish shop, assisting the owner with tank maintenance and customers for both saltwater and freshwater. I recently read Delbeek's and Sprung's 'The Reef Aquarium -...

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