What do fish think about?
Join Date: Dec 2010
Location: East Bremerton, Washington
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Re: new hood a few bulb questions
You can put bulbs rated for a higher wattage in, but your fixture will only power them with the 21 Watts - the power output of a fixture is determined by the ballast and endcaps, not by the bulb you put in. Similarly, if you got the 54W T5HO, you would NOT want to put a 21W T5NO bulb in or the fixture would destroy the bulb.
You could have gotten the T5HO fixture and just run one bulb and removed the other, if you wanted. As is, you're stuck with 42 Watts.
Hope this helps!
ClearForLife 10G Acrylic, 6 HET rasboras, ~80 RCS, 3 otos, various snails. Ludwigia repens, various moss. Eheim 2211 Canister, 50W heater, Finnex FugeRay Planted+ 17W LED.
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