i recently bought 2 little giant pumps (LITTLE GIANT 2 MDQX-SC ,Little Giant 4MDQX-SC ). can anyone tell me a good way to prime these pumps, perhap run pvc stem up 1 foot and pour water into it and attach hose????? the 2mdqx will be to send water from my storage tank to in use tanks, and the 4mdqx will be cleaning the tanks in use. or is there a better self-priming tank on the market i should have gotten. please send pics and advice. thanks.