I am rank new here, and want to learn better composting - i have been doing it "my way" with great success it seems, but i know i am not doing it much by the book, so here it goes:
I have three 55-gal drum compost tumblers - vertical, with a 3" center pipe that is perforated. pretty much like the one attached, but with mine the bottom half and the lid are perforated as well to improve air flow. .
i start each with a 3/4 drum full of horse manure - it comes from a stable, where it is piled and removed over and over for many years, but you dig down just a little and get some ultra rich stuff that has been taking in leachate and stuff from above, so its like its concentrated. i add to that some fresh bedding and manure from a recently cleaned stable, adding some fresh poop and urine both.
as it decomposes and settles down i add fresh grass clippings, dead leaves, and veg kitchen scraps, coffee grounds, as well as lots of crushed eggshell. i will get a bit more of the manure once or twice to replenish, as well as adding fish carcasses and shrimp heads and peels as i live near the coast a nd fish now and then. i will also occasionally add molasses and soil activator just for the heck of it.
i tumble them several times a week, every time i add new stuff and also just anytime i think about it to keep it all aerated. i just wing it with brown/green mixes, too difficult to figure out the breakdown with such a variety of additives i use.
in 2-4 months i have a beautiful compost that has virtually no traces of anything that ever went in it. no celery stalks, onion skins, nothing. fish carcasses typically are unable to be found after 2-3 weeks save for a skull from a particularly larger fish, or maybe a small piece of corn cob.
i then sift it to break down small clumps and apply it to the surface of my beds about 2-4" thick at the beginning of each growing season, or when repotting, etc. - i have even used it to top-dress compost my front lawn. have been using this method for about 8 yrs, with no issues .
it is always cold composting, and i see where some say this would take about a year to make compost. it only gets hot for a few days if i add a good bit of green grass clippings, but that never lasts. i am thinking that since the stuff i am getting is "concentrated" as i described it has already composted so therefore no heat?
my soil is very rich, lots of earthworms, etc. have grown 3 crops of corn in one season, and get great crops of tomatos, cucmbers, cabbage, etc. , red potatoes as well. i like the level of effort i have in it as is - so should i just not fix something that aint broke? or am i doing/not doing something gravely wrong that is an easy fix??
thanks in advance!