Sorry to be so contentious this evening, but I think it's the other way around -- or maybe I'm just reading things backwards -- definite possiblity. Anway, if you have a lot of light, close to 3 or more watts per gallon, then one will want to add CO2 so that the plants can make use of the light and not be limited by the amount of available CO2. Otherwise algae is a likely prospect. Otoh, one can add CO2 and not add a lot of light and the added CO2 will have a considerable positive impact on growth. Addign more light in addition to the CO2 will boost the plants even faster but isn't necessary unless yo like prinung. Adding CO2 doesn't mean you have to add light but adding light well past 2 wpgs means you should add CO2. But I'd want to get up to 2 wpg in just about any event. Good luck, good gas, Scott H. --- Troy Hendrickson <t_hendrickson@qwest.net> wrote: > Not really, you're looking for around a 2 watt per gallon > minimum, higher if > you're using CO2 as a rule of thumb (and of course for > every rule I suppose > thereare exceptions but it's served most well) > > Troy > > -----Original Message----- > From: aga-member-bounces@thekrib.com > [mailto:aga-member-bounces@thekrib.com]On Behalf Of Noel > Wise > Sent: Monday, September 13, 2004 4:19 PM > To: aga-member@thekrib.com > Subject: [AGA-Member] Aquarium Lighting > > . . . > I have a 50 gallon tank (36x15x20 ins) lit by a single 30 > inch "Power-Glow" > high intensity florescent aquarium lamp -110 Lux-25 > watts. Is this adequate > for good plant growth? ===== Plant your feet in Washington, D.C. and touch the moon -- at the National Air & Space Museum. And learn the art of aquascaping Senske style at AGA2K4. Speakers, field trip, Ray "Kingfish" Lucas, and more. . . The Annual AGA Convention, 2004, November 12-14. Convention Details/Registration at aquatic-gardeners.org & gwapa.org _______________________________________________ AGA-Member mailing list AGA-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/aga-member