How to alert that CaRx is not producing effluent?

[ca1ore]

Anyone have a clever way of triggering an apex alert that a CaRx has stopped producing effluent? I’ve tried the 1/4” flow sensor but the effluent flow is too slow,

 

[lapin]

You could use a container that fills with effluent and spills into your sump. Use a optical sensor to let you know its below a certain point. Similar to an ATO.