Hi thanks for the reply. I am actually using the salt system, so is the bleach still recommended in that case or no?

The liner has blue blocks as a pattern. On one side of the pool the water has filled to the point where there are 4 blocks from the water line to the top, and the other side there are 6 blocks visible. I realize now that this was not the best way to pose the question, so I measured and the difference from one side to the other is about 2 and a half inches. Is this 'close enough'? thanks!