Has anyone here converted a wet dry filter into a sump? I have a 180 Gallon African Cichlid tank that has an Eshopps WS-300 Wet Dry under it. It has the sponge and bio balls. It seems now that it is older. I am having nitrate issues. I can see detritus on the bio balls but it's hard to clean out due to the sump not being able to be removed from under the tank. I was thinking of removing the bio balls and adding filter socks. Maybe a refugium in the middle chamber but I'd have to modify the acrylic and cut out some holes to turn it into an actual sump. If someone has already accomplished this, I'd love to know how you did it. Here is a link to the sump. Eshopps Sump