Finally, custom tank arrived. Phase 1 complete
Phase 2 build stand and plumb filters.
It's 6x18x18 with black silicon on the front panel, 10mm thick base and a twin port side drop filter built into each side. So totally Air driven, no messy intakes or canister outlets, no submersed pumps, no air hoses running to air stones inside the tank.
These are the side drops.