Today i made tweak that can control the flow rate in ELS mode in jebao rw and wp model
normally in els mode we cant control the output,so normal led dimmer will reduce the volt of the controller and produce less flow
this what i done
http://reeftank.in/plug-play-way-reduce-flow-jebao-wprw-series-else-mode/
you can get this plug and play version on ebay for 3$
http://www.ebay.com/itm/121342619802?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
small demo when it works
all needed just small led dimmer