I'm running almost the same set up in chamber 1, but still have the sponge/small charcoal bag/small bag of bio media in chamber 2 with my heater in the DT. Might need to ditch my sponge as well and put my heater in chamber 2.Just my 2 cents. LOL!
My setup is as follows;
Chamber #1 InTank basket with flow diverter. Top section of basket houses 2 layers of carbon infused filter pad on top of a 50 micron pad.Middle section of basket contains a small filter bag with carbon cubes and a ChemiPure Elite bag.
Lower section of basket contains bio media (Twice the supplied amount that comes with the kit).
Chamber #2 contains my heater and a UV light that runs 24/7. The hole
in the false wall is plugged( plug came with the InTank basket.
Chamber #3 (the “pump house” as I like to call it) has a Sicce 1.0 with a “Spin Stream” on the outlet.
The Evo is a nice little “nano” setup but needs help in the filtration dept.
Let us know how you set up your chambers when you get you media baskets. The in-tank baskets are pricey, but they are nice and convenient and allow you to upgrade what others have pointed out is a "not ideal" stock filtration.

