Look at Sewer Solutions. MUCH cheaper about $75 on Amazon
https://www.amazon.com/s/ref=nb_sb_s...=3IE4NI7DNSYBX, tough as nails, pumps uphill a couple feet, no power required, can use 3/4 garden hose or one inch PVC pipe, uses water pressure to pump, with good chemical like Happy Campers can gravity dump and use zero fresh water, compact for less storage space, excellent for keeping gray water open. Ours is on fifth year including one year full time with all original components still in use.
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