Since we have set our pool up in 2007, when opening the pool in the spring (starting in 2008) it has been a swampy green mess. We only covered it one year, and then the cover ripped and it was as bad as not covering it so haven't done it since. It had all kinds of debris, etc. in it. It took awhile to clear it out and we ended up emptying most of the water out. But it is so difficult to get all the water out, that even when refilled it turns into a green swamp minus the dead leaves, debris, etc (as much as possible). We start shocking (without really knowing numbers etc. as I have always used strips) and putting in recommended chemicals from pool store.
We have used the pool with the greenish water, cloudy water in the afternoons. I figure if we can swim in our lakes, creeks, etc. with algae and who knows what else it can't be much different.
I plan on getting the 100 test kit, probably next month (teachers get paid once a month around here). I anticipate a better opening next year as I plan on ordering a new winter cover and trying the forums closing section in pool school so am keeping my fingers crossed for next spring.
But can anyone tell me why one shouldn't swim in the pool that cloudy or dingy green?
I shock the pool in the evening/early morning and do not allow anyone in the pool when adding chemicals etc. unless I am sure that the levels are within limits that won't hurt skin, eyes, etc.