I recently put up a small pool. After topping it off with the hose three days later I woke up to brown water in the pool. Needless to say the kids were disappointed so I hastily researched on the internet and read iron out would help. I put very little iron out in the pool and it cleared immediately. After further reading about iron out I am not comfortable letting my kids swim in the pool. It has been 2 days and the filter has been constantly running. Is it safe for them to swim in the iron out??? Please help!