Just wondering if anyone has tried these, and/or has any one seen them in Calgary? I'm thinking of using one, not for my gravel, but for cleaning detritus from the rear chambers on my tank. I have a RSM 250 so the rear chambers are basically the sump, and I think it would work well back there. thanks.
http://www.marinedepot.com/Eheim_Qui...MTGSBO-vi.html