So i got this kinda old proclear aquatics skimmer for like 75$, good deal, imo. But it releases crazy amounts of microbubbles no matter the venturi setting. How do i stop this? It's in my refugium in the last compartment with the return pump because that's the only place it'll fit. Would a filter sock work? Do I need a sponge? I'd prefer the filter sock, easier to apply but I wasn't sure if it would eliminate those bubbles