Is this for a freshwater or saltwater setup? If freshwater I'd try and make C5 wider and C1 thinner. If it's saltwater I'd suggest a wholly different design.
Thanks for the answer, this is for a Saltwater Tank. Whole different design? Oh sorry, can you please show me the right design for Saltwater Sump... TIA
Yeah the only way I'd use all that media is if it were a messy predator tank. Otherwise, I'd go natural and have one section for the return pump, a section for the drain, and a refugium in the middle.