The water level gets maintained a few inches below the bottom of the upper container. The tailpiece extends down into the water.
The tailpiece itself can hang down a few inches from the bottom of the lower container.. allowing you to wick even if water level drops significantly in your modules/pulse res. <- which technically should never happen if your pulse res is auto topped by the elevated bulk res.
The tailpiece itself can hang down a few inches from the bottom of the lower container.. allowing you to wick even if water level drops significantly in your modules/pulse res. <- which technically should never happen if your pulse res is auto topped by the elevated bulk res.