I have a 55 gal and want to add a 20 gal sump/refugium underneath . The stand that i have is open in the back and has 2 support boards running vertical they are probably 1-2in wide. My question is can i remove the boars temporarly without incident so i can add the sump?? oh yeah i do want to do this while the main tank is about 3/4 full. I think it will hold. please any advice input....