I used flushable liners to cut down on the poo in the actual diaper.
I have an LG front loader and used Rockin' Green with good results. In a pinch, I'm able to get WF's powder detergent.
My washer has a "water plus" setting to add more water to the wash cycle.
Then I did:
HOT or WARM "quick cycle", no soap, maybe baking soda and/or vinegar if the load was stinky
WARM/COLD or WARM/WARM, Cotton/Towels setting with 1 scoop RNG in prewash cup; 1 scoop in wash dispenser; HEAVY stain setting, extra rinse
1 more RINSE AND SPIN (COLD/COLD)
I do not have hard water, though, so maybe this won't work for you?
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Liz
DD (3/2010)
"Make mistakes! Get messy!" - Miss Frizzle