all have baffles the two bigger ones are drilled for external pumps if wanted as an option. One acrylic sump has two large sections ans a nice area where the water enters sump has a chamber that can be filled with media or filter floss the measurements are 36*18*16. i want 80 for it. The next large sump is glass it has 3 chambers and is a very common sump design the measurements are 36*18*17 also is drilled for an external pump i have the pump that was designed to fit for sale in another thread. The last sump is a basic 29 gallon 3 sections kind of small but will work for someone with limited space one baffle is broke but does noe effect water flow.....30 bucks takes it. Pictures avail upon request.
