Hi there. Sorry for your troubles. I have a well. I have a tap plumbed to the soft water to avoid iron. So yes, some people do it.
I think you are reasonably safe to assume, based on clarity and color, that indeed some iron got into the pool when the hose was left on all night and the water softener regenerated between 2 - 5 a.m. (Basing that presumption on the photos AND this comment
If the supply of softened water is depleted (Capacity = 0) then the entire system will be filled with high iron content water
You could simply try to add two bottles of Jack's Magic Pink stuff to see if the water clears -- while maintaining a sufficient level of sanitizer. Jack's magic "sequesters" iron, putting it into solution. You need one 32oz bottle for each 10,000 gallons the pool is. However, if that works, you *should* tell them when they return that you've done this, because they will also want to maintain metal sequestrate when there's iron in the water, or it will come back out and stain the pool.
You may also find that once the pump is fixed, the filter may remove the iron.
I did not see the testing results that are causing people to recommend shocking the pool, but if you do, don't be alarmed if the water turns brown from the iron oxidizing. Best to have that pump, and therefore the filter working amidst all this. Regardless of whether you shock or not, be sure to keep the FC reasonably high to offset how stupidly low they had apparently let it get.
So why were they concerned about burning out the pump if it was already broken -- I'm really confused about this combined with the instructions they left you. Were they AWARE the pump was broken, or was it your H who made that discovery?
From this part of the instruction, I take it to mean they're telling you to RUN the pump anyway, right? So it actually WILL work, it's just leaking? If that is the case, I think you should run the pump to keep things filtering...
- During normal 8 hour pump ron (on timer 8:20 am - 8 pm) the pool will lose 160 to 200 gallons of water through pump driven leakage. This loss needs to be replaced by running in softened and filtered water from our domestic supply.