I am getting a JBJ 20 Gallon Rimless Frag Tank and have been looking for good LEDs. Lighting tends to be extremely expensive so if you see any for 150 or lower, do not get it, it's not good. Ecotech Radion xr15 lighting is great for this tank and so is AI Prime. I would suggest AI Prime because it is good and cheap. This tanks dimensions are 20"x24"x9", which is a nice size for a beginner frag tank. Mounts are also important, for the AI Prime, there are 2 choices, one is a hanging mount and one is a clamp mount. I think clamp is the best because it is easily adjustable. The clamp mount is much cheaper for the AI Prime than the XR15. If you are experienced in this hobby, you could try a DIY but I would not recommend it because it is about the same amount of money and much harder. This is a very nice tank and if you want to have great lighting for your coral to grow, these are the two you should go for.