For me, an aquarium without plants is just a fish tank. However, I suggest that you fist get your tank cycled and the *mystery* of water chemistry sorted out before adding live plants.
Planted tanks are wonderful and it's quite possible to have a low light tank with very little hands on care required (see 18g tank in my sig) and very little algae.
It all comes down to tank set up and maintenance. Your tank is definitely overstocked, and that's a very common newbie mistake so don't feel badly about it.
If you're not ready to get a bigger tank just yet, IMO bigger than 20g for the two moores. I'd recomend finding an lfs or local pond enthusiast who will take the moores off your hands. Then restock with some smaller fish researched from the fish profile databases available here and elsewhere. One tip on using internet resources though is to make sure that you always have more than one so that you can double check. If the info doesn't match (or at least come very close) find another source(s) to confirm or ask here which is correct/more appropriate.
Planted tanks are wonderful and it's quite possible to have a low light tank with very little hands on care required (see 18g tank in my sig) and very little algae.
It all comes down to tank set up and maintenance. Your tank is definitely overstocked, and that's a very common newbie mistake so don't feel badly about it.
If you're not ready to get a bigger tank just yet, IMO bigger than 20g for the two moores. I'd recomend finding an lfs or local pond enthusiast who will take the moores off your hands. Then restock with some smaller fish researched from the fish profile databases available here and elsewhere. One tip on using internet resources though is to make sure that you always have more than one so that you can double check. If the info doesn't match (or at least come very close) find another source(s) to confirm or ask here which is correct/more appropriate.