my 120 gallon is plenty planted and i was wondering how i should go at
lowering the light. would going from 280watts to 90 be too dramatic?
the plants are light to moderate and the tanks all grown in to the top
and some.

i also have a 2-liter co2 sys with the tubing hooked to a powerhead
which makes a constant supply of thousands of co2 bubbles. would a
low-light with the co2 be ok? i'd hate to have algae kill all my
healthy plants.

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