We almost got to plumb our 200 gallon tank this weekend!
As it turns out, the previous owners just sawed through the soft plumbing instead of unscrewing the bulkheads and removing it all in one (reusable) piece. We've largely isolated the pieces that we'll need to get the thing plumbed, but there appears to be a random bulkhead sealed to the side of the sump about three inches from the bottom. It's got a barbed connection for soft tubing, but there isn't enough space for an ATO tank to be placed on that side (the sump has a plywood barricade inside the stand). [See Diagram]
From the remaining tubing, it appears bulkheads A and B are for the drain siphons, and hole C has a double barbed connector with a T-splitter for the return pump. Bulkhead D has an obtuse elbow joint with a short PVC connector which transforms into the barbed adapter through its bulkhead. I can't seem to find any other models with a Quick-Drain option like this (240 gallon system or Basement Pond system?), so hopefully someone knows what it's meant for!
As it turns out, the previous owners just sawed through the soft plumbing instead of unscrewing the bulkheads and removing it all in one (reusable) piece. We've largely isolated the pieces that we'll need to get the thing plumbed, but there appears to be a random bulkhead sealed to the side of the sump about three inches from the bottom. It's got a barbed connection for soft tubing, but there isn't enough space for an ATO tank to be placed on that side (the sump has a plywood barricade inside the stand). [See Diagram]
From the remaining tubing, it appears bulkheads A and B are for the drain siphons, and hole C has a double barbed connector with a T-splitter for the return pump. Bulkhead D has an obtuse elbow joint with a short PVC connector which transforms into the barbed adapter through its bulkhead. I can't seem to find any other models with a Quick-Drain option like this (240 gallon system or Basement Pond system?), so hopefully someone knows what it's meant for!