I have 2 jbj wave makers that pull more than they push, patch of hornwort 6" from overflow came loose and ended up on the return end. This seems to be a commom on problem with wavemakers per google. My tank has an external overflow on the left and return on the right, pumps were on the right but I'm thinking on moving them to the left and letting them suck away. Wondering if anyone has tried this or has any other ideas.