That looks like ebb and flow. The thing is to get the pipes coming up right. the pump pipe is on the bottom of the tray and the water drains back through it when the pump is off. The other is and over flow. This keeps the water at the level you want it no matter how long the pump runs.

Pump on, tray flow up to over flow with water.
Pump off, water ebbs back into rez.

Timing sounds about right.