A very longgg time ago someone was selling a Majano and I ended up buying it not knowing what it was (neither did the seller). For some reason it never spread. I just though it looked like a a freaky PPE.
The thing with those par38 screw in LEDs is you need at least 6 inches between water and bulb as it has a huge spot light effect. The Home Depot ones puts out about 1,500 par in a small area and can kill some macro.