Once the tank was clean it was time to install a new booster pump to the house. The old pump was plugged up.
Install new water filtration between the well and storage tank which they didn’t have before and why the tank was so full of $h!t!
Wire in 115v solenoid valve with micro switch and pump up float. Low level float to turn off booster if tank runs out of water.
All done... 3 long days of work... exhausting but now they have clean water and more water from the well. New filtration before the storage tank and a new booster pump to get better pressure to the house.