[anthony10292]

I currently have a 2 bulb odyssea fixture sitting on top of my 40breeder. I'm looking for medium to high light. I have pressurized co2 running at a 8+ bps to give me between 25 and 30ppm of co2. The one light fixture doesn't evenly cover the tank front to back. I planned to pick up a second one from someone locally.

Should I hang both lights above the tank? If so what height? Or should I just stick with the lights resting on the rim of the tank?

Thanks
Anthony

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[anthony10292]

My main concern is an even spread of high light. And no algae from too much lighting. Right now my photoperiod is 7hrs.

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