You will need something to cap the MGOPM once you put it into the tank, I suggest Black Diamond Blasting Sand if you're on a budget. A powerhead with a sponge attached will work just fine for water movement and mechanical filtration. You have the light, though I suggest you only run one of those bulbs at a time unless you are going to get Co2 if they are T5HO. If they are T5NO them probably two, maybe three of them 8-10 hours a day.
Dirt, cap, water movement, and light...you are in business for a low tech tank.