Join Date: Jan 2011
Location: Oklahoma City, OK
I would just recommend you get the Tropica 49 cultivar rather than "Low-Grow" or "Porto Vehlo". I have the original cultivar in my Aquastyle 6. No CO2, no heavy ferts, average light. It is growing, but slowly.
I have "Porto Vehlo" in my high-tech 55 gallon(CO2, EI Dosing, Medium-High lighting). It grows like a weed, but is larger leafed and tends to grow straight up if not trimmed. Even if more lighting could force it to grow in a more horizontal way, I still think it would make a lousy carpet. It would probably be about 4-5 inches off the substrate.