The Ardgay hatchery has the old system of egg trays, where water flowed from one trough to the next.
The one advantage these have over the new system is that in the event of a water failure, the eggs remained covered with water.
Whereas the new stacking units require a constant flow at all times which must not be allowed to stop.

















(The old egg troughs above)
(left and above right) Picking out the eggs that are un-fertilised or bad, and not developing is a vital daily job.











(The new stacking units below)