I have a custom built 6 ft tank. The lighting rig went on it and I has a halogen light rig for a while, but as predicted condensation got in it and it failed. My poor fish were relying on sunlight. I saw this and was a little sceptical as it was so cheap, but the poor fish needed light, so I thought ok ill give it a go.
It is a very small unit, but very powerful. Being able to position it is fantastic so the fish can have a dark area for the shy fish, and bright for the bolder fish. Having a soft blue light with it is brilliant for evenings. Due to the size of my tank I'm ordering another today. It is a great buy at a great price. The adaptor is a little odd, but a second adaptor bought from uk is cheap enough.
If you want cheap and cheerful that arrived super quick and does the job, this is for you!!!!