Carbon came out in the water on first use.

The minute I turned the water on it spewed out black carbon. That only lasted a few seconds and then it was running clear so I continued to fill the hot tub. When I changed the filters a few weeks later they were gray from the carbon that had come out of this filter. Now I don’t know if there’s any more carbon left to filter other fills or not. It’s supposed to filter 8000 gallons, and my tub is only 350, so I should get about 23 fills from one filter.... of course there’s no way of knowing at this point if it even is still working...

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