Just made our second trip in our 2022 hurricane 35m. Both black tank 1 and grey tank both showed 33 % full after 1/2 hour of drain and flush. (All though the flush system does not seem to work well almost like there is a valve closed on flush line) I always flush for 20 minutes it just doesn’t seem like it’s doing anything. Our first trip was fine everything read 0, thanks
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