i also installed an In-Tank media basket once i removed the old skimmer. this is exactly how i have this thing mounted in my rear chamber with the identical "in-tank" basket
for media i am using chemi-pure blue, seachem matrix, and purigen. currently i am in the process of dialing it down a bit with the chemi-pure and going to go with the elite instead. i also have a black, coarse filter sponge and well as the white, fine filter floss pad in there
Equipment:
Kessil a360we
Gyre 130
Tunze doc 9001 skimmer
Tunze nano 6020 pump
Neo therm heater
In tank media basket
Santa Monica. 2 drop algae scrubber
Smart ato
Apex Jr wrote temp probe only
Filtration
Filter floss, coarse filter sponge, pond matrix, chemi pure elite, weekly 5gal water changes