I use a small 12VDC self priming diaphragm pump like the ones used in boats and RV to pump fresh water that I use with my filter. I put a cigarette lighter plug on it and plug it into my portable jumper box like you use to jump start a car with a dead battery. Cost less than $50 on eBay and pumps about 3 gpm. The 5 micron size is too big. I usually use a 2 for red and a 1 micron for whites. One of these days I might get fancy and dig up an old laptop power supply that I can cut the plug off of and wire to the pump and eliminate the jumper box. If I had glass carboys I'd probably bite the bullet and buy an All in One but I don't like glass carboy because of the weight and danger of injury from breaking.