Quick question, what pumps do most bio users use , are they a 240volt water pump or are petrol 12 volt pumps? I do need to get a decent pump before doing another batch of bio. Have checked on ebay for some of the suggestions on this forum and the search returned no results thanks.

G'day. I recently brought this. NEW ELECTRIC WATER PUMP 1HP 60 LTR/MIN HEAD 70 METERS - eBay, Pumps, Tools, Home. (end time 08-Aug-08 10:43:40 AEST)

I thought it was one of those QB80's but turned out to me a MarJon LKM.
Dont know how it compares up to the QB but seems quite good. (havnt actually used it yet)

Serach QB80 in the search function and you should get lots of info.