I am curious as to what suggestions will be posted here for you as I am in the planning stages of making my 20 tall into a planted tank. I just upgraded my light and now have ~ 2.4 wpg also. I plan to use DIY CO2 though. But I think it is feasable to do without adding CO2. You gotta think about what your plants need. Fertilizer, for macro, and micro nutrients, CO2 and lighting are your main considerations.
As far as the 2.4 wpg goes, that is a decent amount of light. You should be able to grow a good variety of plants. And not just low light plants.
Suggestions, heres two I'm considering for starters:
Hemianthus Calitrichoides - low foreground plant
Green Hydro - Hygrophila Polysperma - tall background plant
BTW, I am a beginner myself. I have one recovering java fern right now. I had it in a tank with some gold barbs for a while. They munched it pretty good. I've had other plants but they did not fair as well I'm afraid.
As far as the 2.4 wpg goes, that is a decent amount of light. You should be able to grow a good variety of plants. And not just low light plants.
Suggestions, heres two I'm considering for starters:
Hemianthus Calitrichoides - low foreground plant
Green Hydro - Hygrophila Polysperma - tall background plant
BTW, I am a beginner myself. I have one recovering java fern right now. I had it in a tank with some gold barbs for a while. They munched it pretty good. I've had other plants but they did not fair as well I'm afraid.