I used the tht metal out stuff from Wal-Mart but it barely made a difference in 2 days. I had already gotten the water tested for Iron 2 days ago, (the first day I filled) but the regular pool guy was not there that day so the one didn't know what to do other than put metal control into it.What I did find out at another pool forum was that you can take a milk jug and fill it with pillow filling then drill holes in the bottom of the milk jug, then attach the jug to your return and overnight it cleared it tremendously. Then I have replaced and am doing it all day today and it is looking awesome.
The metal sequestrants hold the iron in suspension in the water, but they don't actually remove them. You most certainly can clear your water through filtering water with high Iron content. I have done it and have emptied the bottles and cleaned my filters that are removing it. I also purchased a Bobby, which is a filter you connect to your hose for when you need to retop or fill pool, it also filters iron. My Pool Blaster vacuum arrived today and I was able to vacuum the Iron that settles at the bottom of the pool. So with the metal out isolating, the homade filter on the return, and the vacuum I have cleared the water 90% in 8 hours. The question I previously asked here was still waiting for an answer is if I should be adding Bleach, baking soda, or borax during this process. But since I received no answer to my actual question here, I went back to the pool place a couple hours ago because altho my chlorine lvls were ideal my ph was slightly high and my TA was 240 the pool guy told me to stop the chlorine for now and put a gallon of muratic acid in my 10,000 gal pool to lower my TA and a product by Natural Chemistry called Metal free, it is not suppose to be affected by the chlorine. And is phosphate free.
For anyone that has had an Iron Problem I suggest using a good Sequestrant, and if you have already added chlorine use the Natural Chemistry called Metal Free, and most of all Make a filter with pillow fill in a milk jug with about 20, 1/4 hole drilled in the bottom attatch to your return also rinse or change your filters every few hours or backwash if you use a sand filter. This is what I am doing and I can see my pool on it's way to the clarity we all strive for.