Join Date: Nov 2012
Location: Wesley Chapel, FL
Pictures would be helpful.
Is there anything shading the DHG? Do you have any other plants in there? More CO2 certainly would speed things up. I've grown DHG in a low tech tank and it just kind of stood there as you are describing. On the other hand, with high CO2, EI and moderate light(a little less then what you have) it sent runners out pretty aggressively. Increasing CO2 is kind of a personal choice though I suppose.
I'm not familiar with Neutro+ so can't comment on that.