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Diana K · 11-21-2008, 08:04 AM

I am sure the natural system can be used for any size tank.
Have you been looking into substrate, decor, plant species...
I understand the watts/gallon guideline is not as accurate for larger tanks. Seems like they can get by with a bit less light and still be medium-light tanks. 2+ wpg on your large tank will be more like 3 watts per gallon on a smaller tank.

Will the sump be sealed? The larger water surface seems to be a great place to lose CO2. Maybe a planted sump?

11-21-2008, 08:04 AM	#2 (permalink)
Diana K Senior Member Join Date: Dec 2007 Location: Near San Francisco Posts: 509 iTrader Ratings: 0 Plant Points: 26200	Re: OK....I am planning a 220 gallon:) I am sure the natural system can be used for any size tank. Have you been looking into substrate, decor, plant species... I understand the watts/gallon guideline is not as accurate for larger tanks. Seems like they can get by with a bit less light and still be medium-light tanks. 2+ wpg on your large tank will be more like 3 watts per gallon on a smaller tank. Will the sump be sealed? The larger water surface seems to be a great place to lose CO2. Maybe a planted sump?