i did consider on that but for the pump is rio10 it've been serving me more than 12mths running on & off so far no problem.
in terms of break down it may sooner or later but i already earn back the pump amount liao, by saving the electrical bills.
Maybe stick it to every yr change once
22w X 18hrs x 365days / 1000 x S$0.24 = S$34.69
or maybe 1 1/2 yr changing once will be great to get a turn over better
but so far i been using rio with no such problem as it meant to be a strong pump, but where as power comsumption sound ok only
Bro Vtec tks for the advice.
But eventurelly once i done up my wavebox, i'll use a split from my return pump to feed the chiller.
So in this way i further save somemore
really have to do alot of planning on every step.