No inline filter before the water enters the pump?
Where does the bypass feed to?
The bypass valve allows flow to return to the tank when you are not pulling the lance trigger
, when I used the same twin tank design like this I found that the bypass was plumbed to return the water to just one tank, I thought the duel feed pipe would equalise the water content of each tank.... But it did'nt I filled one tank and emptied the other unless I constantly stopped working