04-30-2009, 11:43 AM
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Originally Posted by watts300
I measured it last week, and I believe its 23". I have misplaced my tape measure, though. But I'm confident with that.
That's almost 1 watt per gallon. Is there a specific figure (a "standard") that describes high lighting? I know I don't have it whatever it is though.
Is my guestimage right:
Less than 1W = low. 1-1.5 = Moderate. 1.5-2 = High.
The only criteria for how much light you need is, what plants are you growing and is there CO2 addition? If no CO2 then 1-2 watts of full spectrum light will perfectly balance CO2 and nutrients in a normal aquarium, and rooted plants like swords, annubia, crypts, sagitaria, will grow well [see my tank photos for proof]. If you have CO2 addition, you will require 3-4 watts of full spectrum light to balance, and increased nutrients (significantly) and the afore-mentioned plants will grow faster and stem plants will grow nicely.