Sump plans

I wanted a 'cryptic area' for the back partition of the cube, however, this was not feasible and i have decided to incorporate it into the sump.

The water will enter a bubble trap baffle and flow out in 2 directions. 1 to the skimmer bay and the other towards the cryptic area. Only a proportion of the water will flow through this area as it will be low flow for light independant filter feeders such as sponges etc to do thier thing. The water will exit the other end of the cryptic area and be returned to the main tank via an Ocean Runner 3500. The water that passes into the skimmer bay will be filtered by a V2Skim 600 then pass through the bubble baffle trap to the ocean runner 3500 to be returned.