Proper lighting doesn't have to be "brain surgery". If you can get the total watts to 60 for your 30 G, then you'll be able to grow most aquatic plants.
, a couple of 32 watt, 6500 K
, T8s will give you good intensity and distribution. These are available at most hardware stores. GE makes an inexpensive aquarium / plant bulb. I've used them in my planted tanks since they came out and you really can't beat the price, about $10.00 per bulb.
Don't forget the other two pieces for a successful planted tank: You need to have a lot of fish in the tank or dose a good fert in dry, liquid or granules.
And, you need to be replacing a minimum of half the tank water every week. Flushing a lot of pure, treated water through your tank will replace minerals the fish and plants need for good health.