Do I need more ferts?

[Mark Evans]

you could easily double your dosing mate, to see what happens.

 

[CeeJay]

Hi skeletonw00t

HC just loves CO2 too, so by upping your flourish excel, as you are about to do, will only help your cause.

 

[Radik]

I had only considerable HC grow when switched from excel to pressurized CO2. You can't substitute it for excel I am afraid.