Here is my situation. I am building a swimming pool in the philippines and in my area, there are no contractors with swimming pool experience. It will be in ground, bannanna shaped, about 50' long and about 8' on each end with the middle being about 12' wide. The depth will be 5' in the middle. I dont have the luxury of gunnite there. One side of the pool will be a retaining wall/walkway, and I will be roughing in the plumbing on my next visit. The plan is to pour flat the first pour, then use cinder blocks (filled) on the sides. Then install a PVC liner, repour with proper flooring slope, then another wall of cinder blocks for the vertical, finished out. There are lots of skilled masons that do good work there so that part wont be an issue. In the philippines, you just need engineered drawings, pay the permit, and you can pretty much build it however you want. That part is taken care of. So my rough in questions are:
Is 2" the standard pipe sizing for skimmers and circulating system?
Can you make minor adjustments to the water level with a skimmer ?
is it advisable to install a 'suction' port for future vaccuuming use ?
Are 2 main drains advisable or necessary? ( I have read many posts here re: main drain, my primary need for one is water change outs and not skimmer circulation) Is 2" a standard size for a main drain?
Your help is much appreciated!