duel 3" sewer connections using a Sewer Solution?

The elbow connector on the discharge end of the Sewer Solution hose fits 1" PVC pipe fittings, so it certainly is possible to make up a wye type connector for two Sewer Solutions. Hershey is correct that a Sewer Solution is not needed for gray water, which has no large solids and will drain easily by gravity. A 3" cap with a garden hose connection would work fine for gray water.