Getting the "Dragon's Lair" ready

I have now gotten most of the things I need for my Dragon. I am still looking for the correct UVB light.I still need to get the timer for the lights . I got the temperature and humidity measuring devices and am cleaning up some of the reptile feeding and water dishes I already had. Cleaning the 55 gallon tank has proved a lot harder than I anticipated. It was set up as a waterfall tank for my Guppies for so long that the hard water deposits are very difficult to remove. My friend Nick came over and helped me move the tank out side for cleaning. We set it on a blanket so that there would be no chance of breakage. I used CLR to try and remove the deposits, but it did not work. Even letting it soak in the CLR for several hours did not remove it. We rinsed the tank well and brought it back in the house. I have since tried soaking it in white vinegar and using a paint scraper to scrape off the calcium deposits.This worked better than the CLR. Why does it always work in seconds on TV? It is still not clear though. I will have to buy several bottles of vinegar and keep trying. If I cant get it clear, I will set it up for my Dragon anyway and use it until I can afford to buy a new tank. It is clear on the bottom and all clear on the left side. The deposits are on the top right side where the filter was. The Golden Dragon, to be continued..................