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BobB
10-12-2011, 01:36 PM
Which CO2 unit would you recommend for a 57G planted tank? Lighting for medium to high light plants!
Chad Hughes
10-12-2011, 03:41 PM
In my opinion, any high light planted tank requires pressurized, pH controlled CO2 injection. Anything less is sort of a waste of time.

Here's a good example. (http://www.ebay.com/itm/Milwaukee-SMS122-MA957-pH-Controller-CO2-Regulator-/280161980532?pt=LH_DefaultDomain_0&hash=item413af49074)
Hope that helps!