I put them over my 90g standard (48x18x24) and it lights it pretty well. My glass top is kind of dirty and it still shines through.
I've already put 3 on hold, I only have 2 more.
The mfg specs are 20,000k Bright white Daylight. They're 11watt per strip.
They however do not have on/off switches, but that can be remedied with a switch plug from home depot for 4-5 dollars.
I took pictures, but they came out horrible so it's not going to help and my water is brownish cause of driftwood.