New aquarium idea will this be good?

[Firefish17]

I'm currently Building a 75gal all in one tank. Being an all in one it is essential like having a smaller sump in the tank. Hope to have a refugium area in the divided areas in the back. Going to use a ehiem 475-792gph return pump also filter floss then 3 different levels of filter sponge in the first compartment and any other filter products on a media tray. Next section refugium with hob protein skimmer heater and some macro algae, last compartment return pump. Is this a good setup? Any advice or tips?
Thanks
Currently have a 36gal bow front fowlr with hob filter and protein skimmer. Not great success constantly fighting high nitrates and low ph. Have lost a handful of fish. Hoping new setup above will be better

 

[blaxsun]

I'd probably place the refugium and skimmer in separate chambers if at all possible.

 

[Firefish17]

I'd probably place the refugium and skimmer in separate chambers if at all possible.

Ok thanks for the advice.