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250w MH over a 20H


The Ultimate DanK

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The Ultimate DanK

I am wanting to upgrade my lighting in the future from my 24" coralife lunar aqualight to something with a bit more intensity. I just wanted to know if 250w would be too much. I want to do either a 150w or a 250w MH with T5 actinics. Thanks in advanced.

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shaggydoo541

I had a 250w hqi pendant over my 18G. Corals loved it but top off was a beast. There was a ridiculous amount of eveaporation and keeping it cool involved a gigantic fan. But the corals liked it.

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I have a 250w over my 20L and the main reason i have to top off so much is because of the big fans blowing over it. But you do need some kind of fan unless you have a chiller cause it gets VERY warm. But it does make my tank look really bright and my corals and anemones do like it.

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So far I'm in the process of acclimating my 250W MH with 2x65W actinic pendant over a 28gal (24") and I'm happy with the light output. I suppossed to get a 150W but decided to get a higher wattage, just in case I upgrade my tank. Yes you need a fan and regular top off.

 

I don't think 250W is not too much.

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