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to cover or not to cover

2241 Views 12 Replies 8 Participants Last post by  zooman
Question. I have a 46 Gallon planted tank and having some difficulties in growing and currently have a regular 30W flourescent light and a 96W coralife compact light. My question is any chance of my difficulties being because i have a glass top to the tank? I know any glass takes UV away but enough to hinder growth?
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I did some test on this 2 tank with same setup put 3 kind of plant in each one with glass top and one without. The on without plant did grow faster. But now i am stuck at this question is it because i add fresh water more often because of evaporation witch renew a little bit of the nutrient for the plant or is it realy because of the glass. Anyway my observation did show it does grow faster. Hope it help.
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