First off, thanks for all the info here. I plan to start a self install IG Liner pool in the next week or so. My worry is not with the build itself, but I do have a couple of questions that may save some regret in the future. I will be building a pool house with equipment inside after the pool is in. How long after I finish the pool do I need to be circulating the water and getting the chemicals regulated? I worry that I'll have a green pond before I get the pool house ready for electrical/pump? Can I keep the mostly empty with the liner installed or do I need to fill when I install liner and backfill? Also, does anyone out there have the small (return size) savi-note led lights? I plan to use 3 in my 20 x 39 roman, but I hope that will be enough light?