My husband and I bought a house with an inground pool. It's an older one, probably built in the 80's. It's a concrete bottom with tiled sides. We left the water in over the winter, this is our first spring with the pool. We vaccumed like crazy, skimmed like crazy, had an algae bloom, killed the algae, vaccumed like crazy again, added some two different chemicals to make the water "crystal clear" over several days. It's still cloudy. We used test strips and the levels are coming off as safe to swim in, but I don't want the kids in it until it's completely clear. What are we NOT doing that we should be doing? We have a sand filter, we have replaced the sand and backwashed it. I really hope someone can help with this, it's causing marital strife.