Not an AIO. This is one of the last 30s that IM made without. My friend who owned a store for decades had it in her warehouse. I have a sump. Thanks for the kind words. Good luckThanks for your contribution to my endeavor! Your aquarium is quite cool and proves you can have an amazing, vibrant reef without a “smaller” tank. The great variation of see life makes this so cool! You were quite innovative (actually no pun intended) in how you developed your setup.
How are you using the inout overflow and return shown in your post? Is this an AIO IM aquarium?