Hello. I really like the Amazon biotope article in the latest Amazonas magazine. They used a ton ad knarled branches and leaf litter and it looked like there was just a spotlight used. I plan on doing this in a ~25 gallon cube for cardinal tetras. Does anyone have an inexpensive source for a light like this? The only ones I've seen are for ponds and are a ton of different colors. I also need it to be waterproof/resistant. The tank is one section of a DAS system so it gets very humid where the light will go.