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T5no on top vs t5ho hung above..

683 Views 2 Replies 3 Participants Last post by  mrbigshot
My main tank is a 40b, co2 injected and is located in my dimly lit living room. I like having the lights sitting on the tank rim to help keep light out of everyones eyes when we are watching tv etc. Would it be a good idea to run 6x21w no tubes? I already own 2 2x21w fixtures but im debating if this is enough light for me. It comes down to 6x21w t5no on the rim or 3 t5ho tubes hung above the tank.

Ps. My substrate is about 14to15in from the rim.
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you could but its more what plants you have on the bottom. high light carpet like hc? not a chance. low light crypts? sure. 40b are really wide @18" but i dont think you would need 6 of them 4 at the most should be good.
 
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