Hi, I recently got a good deal on a second hand Fluval sea evo 13.5 gallon, and I'm wanting to get a media basket like the Intank ones, but all the ones I can find seem designed for the tanks with one vent, at the top of the tank. Mine also has a slightly smaller vent at the bottom of chamber one, which I'm worried will defeat the point of the basket, as water would just flow through the bottom vent and up into chamber two without travelling through my media? Has anyone got any experience with the sea evo's with two chamber one vents, and what should I do filtration wise? Is there a easy way to block the lower vent? To fully clarify, water enters chamber one through two vents, top and bottom of chamber one, but still enters chamber two at the normal space in the middle. Grateful for any advice I can get.