This was the only container i could find that a wasnt over 100 and b actually fit the filter with a limited amount of filter exposed on the top and where i wouldnt need an excessive amount of water and tsp to fill the container

I have a filter cartridge in my pool filter and i scoured the internet for a container that would hold the filter cartridge while it soaked overnight in tsp i do this about once a month in the summer and less the rest of the year