I am trying to get this little nano of mine to the point of wild growth and it seems to be slow going... I am dosing Excel for CO2 and am wondering if anyone has seen consistent pearling with this product in place of actual CO2 injection ??? I have a hunch that this is my problem...

3-gallon
26-watts CF light
Eco-Complete Substrate
EI Dosing (to scale)... Dosing NO3, PO4 and Flourish Comprehensive
Using Flourish Excel for CO2 - ???

I have found Excel to be an excellent product for spot treatment of BBA, but have not relied on it as a source of CO2... ?