Nice Tanks. The nice thing about the LED's is they give the shimmering effect across the rocks. I got mine frmo Home Depot for under cabinet. You can't capture the look of the LED's in pictures.
It was $30-40 for a pack of 3 that link together. Each has 10 or so lights and only a couple of watts. I think you can add up to 6 on one transfromer. They are a lot brighter than moon lights.