Just set up our 3400 gallon pool and the water that was used was rusty. We have considered just emptying it, but my brother insists that we can clear it up. We shocked it initially, but have done nothing else but run the filter and rinse/change it daily. There is a sediment at the bottom of the pool that we can now see but the water is still orange in color. What would my next steps be? I am a complete newbie to this.