There's nothing wrong with Walmart chemicals, that's not wrong with all the other pool chemicals. Avoid their combo-shock product -- it has 'fillers' just like the expensive poolstore BioGuard product. Walmart PLAIN dichlor or stabilizer is OK.
Swimmer's ear is avoidable. Read this page =>
http://www.poolsolutions.com/gd/prev...mmers-ear.html
However, if you operate your pool with no chlorine . . . you are fortunate if swimmer's ear is the worst thing anyone gets from your pool.
Ben
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