I am going to have to remove my wet/dry to install my closed loop, so I will only have a skimmer and a refugium, but I can still run carbon and poly if i need to in the output of my remora... does anyone else run their system without wet/dry filters?
The last time I used any trickle filter media (don't think I EVER actually used bioballs) was around 1989 or so, but then again, the big thing then for a healthy tank was to have tons of algae in the tank
Good move on pulling the bioballs, I would suggest doing it in steps though to allow your biofiltration to pick up the nitrogen load. Remove about 1/4 of the balls once a week for 4 weeks, that should allow your system to transition without any nitrogen-related issues.
Just curious, how much rock or sand is in the system, and how long has it been there?
I run what I call a "hybrid berlin system". I don't have any wet/dry, instead I have a mud sump with no macro algea.
Skimmer -of course
I also run an old canister filter I had laying around (Rena Filstar XP2). I don't have anything in the media chambers at all, it's just running as a "pump" to run my UV, though I have the option to add any media I would choose, should the need arrise (carbon, poly, etc.)