I'm filling up my 26 ft round above ground Intex ultra frame pool for the first time. I started filling with hose yesterday around noonish. It's now near 8 in the morning. It still is about a third filled or maybe even less. It's not leaking. I walked around it all yesterday checking, plus I went under the line before I started to add the water to check for holes. Is this normal for such a big pool to take so long?