I live in Kelowna and have a very similar setup to what you have (135 gallon tank with sump). I built my own sump out of a 50 gallon breeder tank based on one of Melevsreef designs(
http://www.melevsreef.com/allmysumps.html). Feel free to send me a PM if you have any questions or would like me to have a look at it. It would be great to talk to a fellow reefer from Kelowna.