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Blackheart 04-25-2013 11:00 PM

20g long high light
A t5ho 49 watt over a 20 gallon long would be considered high light, right? at this point would you need C02?

Hoppy 04-26-2013 01:34 AM

What bulb or combination of bulbs produce 49 watts? What brand is the light?

Blackheart 04-26-2013 01:49 AM

It's an Odyssea 24 inch T5HO. I just said 49 watts because it uses 2 24 watt bulbs. there's one 24w t5 10,000, and one 24w t5 Actinic lap.

Tmuck44 04-26-2013 02:06 AM

change actinic bulb if you wanna grow plants

Blackheart 04-26-2013 02:10 AM

What are you talking about? I have this fixture over my current tank and it grows plants just fine.

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