Best bet, just go with a PVC enclosure. I have one right now and another on the way, both from Reptile Basics. They will pre-install a dimmable LED strip inside the tank for you, and you can easily mount an RHP inside them. I had no experience with this type of thing when I did my first one, but it is super easy. You will have to drill one hole to run the cord through the tank, but otherwise it is just a matter of screwing the panel to the inside of the tank.