So, I guess this must be a unique question. So I called Pro Products and asked them about reusing the pot perm. The response went something like this (beaware this is a paraphrase, I have no actual knowledge, if you have the same issue or questions please refer them directly to the company) :
Is the pot perm reusable?
The filter stopped regenerating and the pot perm powder built up on top of the pad due to continued application. They asked:
Is the material contaminated; Since the brine tank is covered and the material was removed from the top of the pad and the filter was not regenerating, the answer is no it's not contaminated
How old is it; It appears to have built up over 9 months to a year.
Is it crystalized; no
In that case it should be fine to reuse the material.
Storage and application;
The material is wet which is not a problem
They suggest it be stored in a covered container. A bucket with a cover.
That it be applied to the filter in the same manner as normal using a cup to measure the same amount normally used by volume.
The bottle we use is 1Lb 12oz, the volume of contents is 1 pint
Regarding disposal; The sds is on their web sight. It appears to indicate it should be disposed of as hazardous waste.
As for the filter;
After cleaning and reassembly, I was able to run through the brine rinse and brine refill cycles manually with water in the brine tank per instructions from the 5600 service manual. During the brine rinse, the fluid receeds well below the pad now, and during brine refill rises back to about an inch above the pad. Which appears to be as it should. So I added the pot perm powder and I believe it is working now with a slight leak from the control valve during regen. Which I am hoping is not a big deal and can be left as is for now. I would be very interested in opinions?
Then I ordered a set of injectors, flow washers and a piston kit from Softenerparts.com for the next time.
Now I am trying to find information on replacing the filter tank media. Its about 14 years old. Tank is 9" x 48"
I would also be very interested in information on replacing the media and gravel. what kind is best etc.