According to concept420.com, egg shells ALSO does a PH balance in your soil. Dry out every well, crush to powder & make a tea.. for PH balance, etc. Epsom Salt does a balance, also.
what bout horse shit dat any good?Rabbit manure is worth it's weight in gold. 100% is the best worm feed there is, and Rabbit Farmers will give you the shit for free. Make sure to spread it out, wash it, to get the urine out, and let it dry. Now, you got something. The book by a Dude named Shields is awesome, on worm growing. Growing is fun, but so is training worms.... Oh Yeah!!
As you say, just a little pot ash is good. Pot Ash from burned treated wood, charcoal,plywood with the glue, etc. is often thought of as Pot Ash. No good, so beware. 2 oz. of piss (human) per gal. is good also, but I don't trust my piss, 'cause of my bad diet. Beer & chemical vitamins with a side of Possum ribs.
Human piss is high in Nitrogen. But I'm serious about my bad diet, I use it sparingly. NEVER female piss with birth control, that scares me. Never eat any Possums... Just talking Texas Country shit. During the Depression, Coons & Possums was all country folks had to eat. I hunt for Deer, 10 minutes, get my kill, & eat the liver w/ onions & Poke Salad. Horses have only one stomach, so it's wonderful, not too much nitrogen to burn plants, but needs to set out for a bit. Beef Cheek & hand-slung Chittlin Tamales can't be beat.