I think the problem is the manifold, you can replace that without reinventing your nutrient regime. What kind of drip manifold from orbit? They have many, the regulating or non adjustable ones will be a constant problem. The adjustable or unregulated open port variety would be best, no tight constraint or regulating membrane, but your pump might not work with that settup if it’s really putting out a lot (or you’d need a pressure regulator that will work in “dirty” water without filtering).