I live in Glenmore Park SilverDragon all the set up is just about done all thats left is a couple of pieces of PVC for the bulkheads and to wash the gravel wich is going to be the hard part, Then I have to save some dosh in order to buy filter media for the sump. I was thinking of useing Jap Mat in the 2 first chambers then useing biomax or the equivelant in the 2 second chambers. I was looking into buying the Bio Home media but there are no suppliers here in Sydney that I know of. If anyone else has any idea's on media for the sump please voice your opinion as this is my first sump.I just don't want to use bio balls as they are Nitrate producers and I want to keep maintanance to a minmum.