Hydor Korallia and timers

[jhawkor]

I have a pair of Korallia 3's that I recently bought a wavemaker for. They work well on the wavemaker except they make a pretty loud clicking noise when they kick on. Should I try ordering a pair of new impellers or is the loud clicking noise normal? Thanks.

 

[jhawkor]

Bump. Anyone esle have experience using these with timers?

 

[krshlln300]

It is normal, and it is not actually the pump but the controller switching circuits. I have my 3 koralias, (2 evos and a 3) on my aquacontroller jr and they do the same thing. I wouldnt worry much about it. I think it is just a matter of the controller turning them on and off, kinda like flipping a light switch.