Lighting tests
Interesting Steve, but thats at 9 inchs. Halides are supposed to penetrate deeper than vho or pc bulbs, thus the reasoning for their use on deeper tanks.
In a shallow tank, one could grow sps with normal outputs bulbs. Can you do a measure, say at 18 inch and one at 24 inch? That would be interesting.
Also a bulb cost versus intensity versus watts, would be interesting also. Halide fixtures to drive 175 watt halides can be pretty cheap now days and the bulbs can be purchased for a $100 on sale. I have never purchased pc bulbs or fixtures, so cant comment on them.
175 watt German 10K bulbs are one of the best on the market. They dont necc. need any supplement actinics. I was going to run mine the suggested 18 months before changing out. It would also be good to see the par ratings at different depths, compared with pc,s after a years use. Do pc bulbs still have good colour and par after a year?
[ 22 August 2002, 06:01: Message edited by: Doug ]
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