The only way to get more lighting on ground plants is to up the intensity IME. This means more watts per gallon. IMO actinic bulbs are'nt going to be a good choice for glosso as they are'nt the right spectrum. You need high amounts of red and yellow to get to them as well as blue. And glosso is going to need CO2 of at least 20-30 ppm as well to grow. Actinic bulbs are around 18,000k. Proper plant bulbs are around 6,000 to 9,000k.
http://www.cameraguild.com/technology/kelvin.htm is an excellent page on what kelvin ratings (k) are all about.
http://www.cameraguild.com/technology/kelvin.htm is an excellent page on what kelvin ratings (k) are all about.