Hi let me re introduce myself

[lockrookie]

that overflow box mimics my lifereef overflow box....i wish i could have drilled my 90 but the tank is tempered thus why i used the overflow box and if yours runs on the same principal you will have no issues it never loses a syphon.

just as a hint be careful cleaning the syphon tube i blew out oneof mine with a pipe cleaner gismo luckily it crazy glued ok but they are pricey to replace good to have a backup on hand of any sort original or made upjust in case.