Looks cool, i have a small version of that w/out the pump. 6 gallons per minute...

Would take a while to empty resevoirs, but less back labor indeed.
ninfan77 Reviewed by ninfan77 on . DWCers must buy item All growers soil, hydro and DWC especially should own a wet-vac with a pump. Don't cry about a res change anymore do it the easy way....suck it out then pump new stuff in. I should have made this purchase a long time ago. Worth its weight in gold....also for spills and general house crap. Heres the one I picked up http://http://www.sears.com/sr/javasr/product.do?cat=Wet-Dry+Vacs&pid=00990159000&vertical=TOOL&subcat=Tank+Style&BV_UseBVCookie=Yes Rating: 5