What does the tank have for a top? I assume it is a glass top, if that is the case a little handy man work might be in order to mount those strip lights. I think they would be nice for that tank its a matter of how to mount them. I'm thinking if you made some sort of bracket so they can hand outside the tank on the middle long straight pieces facing in and down, if you tinker with the angle a bit you could keep it shining into the tank and having one on either side should provide nice coverage. Mounting them in the tank could pose an issue with humidity and laying them on the top would take up coffee table space. This is a really cool tank and I have personally thought of having one myself so I am anxious to see what you come up with. I'm not sure what sort of over hang the top has but if it has a couple inches you could do the lighting on the outside as I suggested. If it were my tank it would be going in my home theatre room and I would tint the top (Mylar tint on the topside to avoid contamination) then I would do water proof rope lighting (most likely white to maximize the amount of light given off) around the perimeter on the outside top edge of the tank, with a couple inches of overhang on the top it would limit light coming through the top and make for awesome accent lighting. Depending on light penetration into the tank I may consider making a deflector or putting a layer of aluminum tape (used to seal ducts) around the perimeter of the top to deflect light down. One could also use the aluminum tape directly on the rope lighting to direct light, put two layers on with the sticky sides together having the top out layer slightly larger than the under layer. Keep in mind I've never done this I'm just trying to throw out ideas on how to cheaply do this while maintaining some sort of cosmetic appearance. I think either the rope lighting or the led
strips would be the best route other than that it's a personal choice.