I have read many of the reviews and the bad ones appear to have been from people who did not do research and follow instructions. When I used this product at first (previous product, same chemicals) I got calcium precipitation for a day of two and a pretty much clogged filter. Cleaned filter and all was fine after that,

After a lot of researching I found out that heating the dissolved product caused precipitation. Now, after I have added all chemicals and heated the water to 104 degrees (3 degrees past my normal setting of 100 degrees) I
1) turn off all the air to the jets
2) add the spa balance chemicals
3) turn the heater down to 80 degrees (so that the heat will not come on)

When the chlorine shock has settled in it is OK to use the SPA. After 1 to 2 days I turn the heat back to my preferred settings. I start usig the air in the jets at this time but keep the air off when I am not in the tub. After a week or so I let the air on all the time so that stink does not build up from being shut off.

I have not experienced ANY precipitation using this technique. I only discovered this about a year ago and the memory of sitting in the tub and straining out the precipitation with a net and wiping the tub walls free of accumulation are only a memory.

I followed the directions to a tee. It made the water cloudy at first and I followed the instructions to address that. Next day, water is clear but there is a thick layer of white sludge covering the entire bottom and sides of my tub and my filter was completely jammed with the sludge. I’ll be weeks cleaning up this mess. The pictures taken are after 2 days of cleaning and vacuuming. The filter has been soaking for 2 days as well. Sure would appreciate any advice about how to clean this up without dumping all the water, again.

Definitely stabilizes the pH and keeps it steady for a longer period of time.

Oh perfect helps keep the ph balanced so I don’t have to keep adjusting it.

I made the mistake of adding calcium booster before using this. This stuff solidified every bit of calcium and coated EVERYTHING chalky white. Gummed up the filter, calcium deposits on jets, every tub surface, and coated heater element white. Descaler did not help. Had to drain tub, remove heater element, every single jet and control, and wash tub and jets in CLR. If you added any calcium booster, DO NOT USE! The pic is of the heater element. Every jet and tub surface looked the same.