Wouldn't the crystals be on the bottom and not in suspension? The most inexpensive filter is the Vinbrite.
You can get the housing most places buit they are much much more expensive there and I dont think they carry good filters there. I get my stuff from Filtersfast. I use a 1 micron for whites and 5 for reds. Here is the link below.
http://www.filtersfast.com/Pentek-158117-Filter-Housing.asp
http://www.filtersfast.com/Pentek-SW-1A-filter-wrench.asp
http://www.filtersfast.com/Pentek-244047-filter-mounting-bracket.asp
http://www.filtersfast.com/Pentek-PD-1-934-Sediment-Filter.asp
http://www.filtersfast.com/Pentek-WPD-110-water-filters.asp
These filters are good forr 1000's of gallons if your wine is clear when you filter which it should be. I freeze mine after use but you can also build a PVC capsule and store your filters in a kmeta/citric acid solution.
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