after doing around 50 extract brews i'm ready to do all grain..i allready have a nice propane burner,sparge water bucket all the taps and fittings and am waiting on my 30 qt. stainless brew pot which i got used off ebay for $53..so here's my question..i bought a 5 gal round igloo water cooler from walmart for $18 ..i plan on doing 5 gal brews only..will the 5 gal cooler be big enough for mashing..i'd hate to take it back and invest another $30 for a ten gal when a 5 gal will work just as good..thanks to all who reply..