Cleaner_water

Hi there, I too have an LA Spa, I have found that a paper filter works just fine in my concord tub. Here is the number of filter that I have been using FC-0315 by Filbur also replaces the 6CH-47 it is 6"x9" w/1-1/2 theards. Hope this helps. I got my La Spa on the 19th April my dealer recommended that for the first two weeks I wash and change the filters daily, since then I have washed and changed once a week. Thats about 24 washes, as I have got two sets of filters thats 12 washes each. The filters still look like new with no signs of wear. When I wash them I use nearly 1 capful of bleach with a small amount of washing powder. I use a short cycle and slow spin wash set at 40 degees, then hang them up to dry. My warranty states that filter cartridges are covered for 90 days I presume that applies to filter bags as well. If I was you I would take them back for replacement, Obviously they should last longer than a few washes.