Actually you really don't need anything special. For some plants like Java fern, Vallisneria, anubius, crypts and java moss, that have very few needs you can probably get away with what you have. How ever if you want more attractive and lush looking plants the things stated above would be a wise investment. For substrate, I use flourite and find it very effective. For heavy root feeders likes swords this is a must. Also high output T5 lighting will be very helpful in growth and I think it looks better. If you get the HO T5 lights you are going to want to get Co2 as this will help photosythesis and will lower your chances of having algae. These things can be very expensive so definitely do your research. I hope this helps.