Discussion in 'Reef Lighting' started by JohnO, Jan 31, 2005.
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That was supposed to be a little joke. I do like nutterbutters though.
Mine too No worries I like nutter butters really fresh or really stale. I prefer stale!
[quote author=Midnight Madman link=board=lighting;num=1107241757;start=15#28 date=02/03/05 at 04:52:15]I have seen the sun in winter...[/quote]
I though that we earth dwellers are bit farther from the sun in the winter<<<jk.....
[quote author=Gresham link=board=lighting;num=1107241757;start=15#25 date=02/02/05 at 16:34:23]www.Apogee.com
It's the Quantum meter (with waterproof probe). Apogee has a hard time manufacturing these in the winter though, they calibrate them to sunlight (which may not be out in the winter).[/quote]
Thanks....im on the hunt.
apogee.com took me to a software site...no mention on anythin meterish...?
Thought it was that. www.apogee-inst.com ?
ooh, a new one with calibration, the QMSW-SS model.
which meter do you have Gresh? The inacuracy seems a bit much going by the chart relative to the ideal "reading"....or is it not enough to matter for measurement of par for plants/inverts? Im probably going to buy one if its the quantom model.
I would venture to guess that the 150W was in a good pendant (Reef Optix or similar) and the 400W was in a plain-jain mogul base with maybe a flat reflector? Reflector efficiency is VERY important. Could you specify what was used?
It's also my opinion that, for reasons I dont pretend to understand, 400W bulbs are a bit less efficient than their smaller cousins. I hear lots of reports that they produce way more heat than a similar 250W, with only a modest increase in light output. That makes me believe that 400W waste power getting hot instead of getting bright...
Nope, you ventured into a different area Watch out for those monkeys, you won't want to get hit with what their throwing
The 150w MH is a Iwaski PAR 36 medium base lamp, it has an internal reflector FWIW, they have some of the highest CRI in the industry.
The 400w is in a pretty nice PFO hood, w/o hammer tone. Definitly not a flat reflector. The bulb brand escapes me right now.
The question you should have asked, is, what kelvin is each lamp, and what brand . A 20k puts out less par, then a 6.5k. Even at the larger size, I get more par outa the 150, then the 400w.
Your last statement is partially true, depending on on what ballast and bulb are used + function needed to achieve. With decreased effiency, 1000w and 400w still have advantages over 70w,150w,175w and 250w. You won't see many larger tanks with loads of 150wers on them, but youll see plenty of em with several 250w, 400w and 1000w.
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