Nice aquascape... looks real good.
I think you should take off your HOB filter when the plants grow in a bit. Just for asthetic reasons. I know you can't really see it in the picture, but I'm sure you see it every day.
75 gallon, fillstar xp2 with inline reactor, 12 Lb pressurised co2, 4.2 WPG-corallife 3x96 watt PC-, fluorite/silica-sand substright.