What are the dimensions on a 40g breeder. If youre looking at 4x96w PC and are looking at SPS why not just do a 250w metal halide and a couple normal output actinics. I know people do it with PC and VHO but why not get the best light from the start. All lighting systems create waste heat and watt for watt its gonna be about the same amount, the only difference is with PC and VHO the heat radiates off a longer surface rather than a small area like with MH. A well designed canopy with fans or even a hanging pendant fixture will make the heat issue easier to manage. If MH is absolutely out of the question compare the prices between 4x96w PC and 4x90w(3')VHO powered by an
Icecap electronic ballast. It will also drive PC bulbs if you wire the PC end cap and as a plus if you lose a VHO bulb you can sub in a no output tube(cheap) Then there is replacement costs for bulbs. I got a year nd a half out of the cheap CL O3 actinic, replacing the tubes with
URI VHO was under $30 each, as I recall 96w PC ar around $60 each. Something to think about. Btw Iwasaki 250w MH is well under $100 and may be good for over a year esp if driven be an electronic ballast like a blue line or Icecap
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I thought I was me, but I was wrong