Go to Paul's aquatics in surrey buy a tank (I use a 33 gallon) go to Payless glass in Langley and get some baffles cut (cost me $28) and a tube of silicone from any fish store.
Took me couple of hours to build and 48hrs curing time and voila sorted.
Look here
http://www.melevsreef.com/allmysumps.html for info on sumps and designs.
Hope this helps,
Dunc
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