I am using a Hagen Nutrifin DIY Co2 system, and a seperate baking powder & vinegar system. Both were rated for 40gal, and my tank is 65gal. I use the aqueon 55/75 HOB filter, and a 100 whisperer air pump for my sand fall. My Co2 tester is a darker blueish green, and never the medium tone green...

I need help on getting a t8 18" I have a zoo med 15" plant grow and I'm trying to upgrade to 2wpg or more I just ordered some Cuba.