So I will start from the beginning. Now my problem started about a year ago. I was getting sediment and low pressure. I decided to call a water filtration company. They sold me a fancy $4000 system. Come to find out the first day the system worked fine. After a few days I would get no pressure. I contacted the company and they returned and replace the system. Again it work for a day or so and then I would get no pressure. I spoke with the owner this time feeling frustrated he advised me to purchase a new pump and this would fix the problem. Installed the new pump to find out after a day I had no pressure again. I called again he told me to put the bypass on and they would send me another system. While the bypass was on I noticed lots of sand coming in.

I figured the sand was coming from a broken pipe between the well and the house. So this weekend I dug up my yard to find out the pipe is not cracked or leaking

I then figured the only thing left is to raise my foot valve. I did that yesterday and ran the pump for 30min. Still lots of sand coming in.

**My question is how long to I have to let the system run in order for the water to clear up. And if it seems like its not clearing up would it be safe to consider that I might have a crack in the casing. **

Plumber who tested my foot valve and said it is working perfectly fine. The foot valve was full of sediment however after cleaning it and testing it he said it works perfectly fine.

Other info just in case:
2"casing - packer system
original (3/4hp jet pump,steel reserve tank, cheap water filter system)
current(1/2hp jet pump, bladder reserve tank, "fancy water system on bypass")