Worms need roughly a 65/35 carbon/nitrogen ratio (browns to greens) just like compost does.
The shredded beddings and coco mats are meant to be comsumed. They are the browns.
So it comes down to quality of greens and browns. Paper and cardboard is carbon, but nothing else. Coco is excellent carbon on the carbon scale, and it contains nutrients too, so when it gets eaten nutes get released.
I prefer a layer of coco mix over news paper or expensive coco blankets.
Leaves are excellent browns but personally I don't put outside stuff into my worm farm. Some people sterilize leaves in boiling water, then use them.
Thats actually a really good input, just a pain in the ass, coco is easier. Safer too when you consider wives vs dirty leaves in the kitchen soup pot boiling away.
Weed stalks, avocado skins, anything woody is a carbon source. Fine bark mulch works. Rootballs are excellent carbon.
Carbon sources on average will hold 4 times their weight in water, so if your worms are too wet, lecheate running out alot, add more carbon. If your trays are constantly running dry, add less carbon next time.
Carbon is far denser than greens, so your 2:1 carbon:nitrogen ratio is by volume, not weight.
As for ingredients, if it can make your eyes water or is an animal product, don't feed it to the worms, so no ciitrus, onions, hot peppers, etc...
Your mineral mix to you is key, to the worms it's just grit. They need grit. If you think it's low on grit then more oyster shell flour is the best route, not adding more phosphate or traces. For phosphates and traces, stick with your balanced inputs that you figured out to sprinkle in.
EWC makes for a great top dressing, so if you have a favorite topdressing/spike mix that you use, add that to your worm farm so the EWC mineral levels are similarly balanced to your topdressing mix levels.
The worm farm is also a great place to start greensand decomp. Any slow release mineral is best added here.
Things like SRP and azomites or rock dusts should only be ratioed the same as they are in the global soil mix you flower in.
Fun fact: If you have ever tried starting an avocado pit by using toothpicks and a glass of water, a worm farm will sprout them way better.
Bury them 2/3 deep in a corner of the tray and in about a month they will have a huge taproot into the tray. Pop them out and plant at that point, buried 2/3 deep in potting soil.
Mango seeds too.
I find that any squashes, pumpkins, or gourd-like veggies are the worms favorite greens. I use a lot of kale too. I grow it in a tub in the lower light of the tent floor in the flower tent. I use used soil and flower soil to grow the kale making it a very nutritious input.
All my trim and clippings go in as well.
If you dry your fan leaves until they are brown, they are browns as the nitrogen has vented to atmosphere, but all the other goodies that you purchased to feed your plants, as in minerals, are still locked in those leaves.
If you flash freeze those leaves until use, or add them fresh, they are greens with the same good nutritional profile.
