I have to get some advice. My PB installed the liner yesterday and the bottom looks like someone that has chicken pocks...thousands of small bumps all over the bottom. He says this is normal but i thought the bottom was supposed to be close to baby butt smooth. I understand you get get some debris in spots, but over the entire bottom? The bottom was a sand and portland cement mix, mixed in a mixer. I don't know what ratio they used. I tried to get some pictures but it won't show up in a picture. Best i can describe it, it looks like chicken pox, or some one was in the jungle with thousands of bug bites. I'm at a loss. You cant see it this morning with it half full of water but I'm afraid its going to look horrible with the light turned on.