Is this enough lighting?

Apr 11, 2006
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#1
Hi guys, I was wondering if this is enough light for my 20gals system. I have a 130watts pc system and took out the white bulb leaving me with only the blue one which is only 65watts because I believed that with the white blub, my lighting is too intense for some of my corals, beside, I like the coloration with the blue one more. In my tank, I have 1 zoo, 1 flowerployp, 1 clam, and a 7 heads torch coral(pom-pom coral). I don't know if 65watts is enough for the clam.
 

1979camaro

Ultimate Fish
Oct 22, 2002
5,862
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42
San Ramon, CA
#2
Why do you think there is too much light for your 20? It sounds pretty good to me.

The photosynthetic creatures really need the white light...much more than the blue really. I am doubtful that your clam will survive well under that lighting. If you want the more blue look you could turn the fixture around so the blue is in front...it will have some visual effect