The old 600 gallon quarantine system mid removal.
Down to the cribbing supports.
The new 1,000 gallon (3 ton) quarantine system plumbed for recirculation and to drain. Filtered by a 100 gallon Rubbermaid stock tank of bioballs/matala.
The back of the tanks will get various sizes of four foot tanks: 75 or 120 gallons.