Planted Tank Guru
Join Date: Dec 2002
Location: Portland Orygun
Even if you found higher wattage bulbs, think HO or VHO bulbs they would not work in your current fixture as the ballast is only designed to fire the 40 watt bulb(s).
To light a planted tank you either have to buy a light designed for doing that or go with something like an AH Supply kit that you can put in your current strip.