Growing Wheatgrass, using old soil for compost.. reuse?
I grow wheat grass for juicing. I know soil is cheap, but I try to be as efficient as possible so I made a composter out of a 2 foot tall (give or take) garbage bin.
I hand-shredded some old newspaper and put it in the bottom, and put some moist old (used) soil on top. I then added a layer of 3/4 decayed compost (fruits, veggies, other organics), covered with some more used soil (which has withered uncut grass in it) and then a final layer of soggy newspaper shavings. I put the lid on, and turned the bin a bit to loosen it up. Inside are mold mites and a small handful of potworms, and red worms to start.
I have many questions hopefully you gardeners can answer.
*I was hoping to use the composted matter to lay down in trays again and recycle as new soil for wheatgrass growing. Will this work, and is it safe?
*How often, if ever, should I add more worms? I plan to buy about 1lb of redworms to put in. Will they reproduce fine on their own?
*Is using newspaper as dry material safe? I understand it is better for the environment as it will be broken down — but if composted and the soil is then used to grow things like vegetables, wheat grass ect things we eat — will the ink in the paper be harmful to us?
*If the compost is unusable for recycled soil, id still like to keep the bin for reducing organic trash waste.. so any tips would be appreciated 
Thanks!
If you want to use a compost bin, you will have to buy one because they are specifically made for composting. They are made of plastic and have air slots all around them. Compost will rot if it can not be aerated. I have a Compos-Tumbler which works much better than anything I have ever used and it speeds up the process. Compost can be made from just about anything except meat and meat by-products. Grass clippings, weeds, hay, table scraps of veggies, crushed egg shells, and shredded newspapers, but don’t use the glossy sheets. Most newspaper ink now has a soy base and is not harmful. There are garden red worms and fishing red worms and they don’t mix. In other words, do not buy red worms from a bait shop and expect them to eat your garbage. If you are just going to grow a small amount of wheat grass, then it would be cheaper and much more sanitary to purchase a small bag of compost to use for planting.
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If you want to use a compost bin, you will have to buy one because they are specifically made for composting. They are made of plastic and have air slots all around them. Compost will rot if it can not be aerated. I have a Compos-Tumbler which works much better than anything I have ever used and it speeds up the process. Compost can be made from just about anything except meat and meat by-products. Grass clippings, weeds, hay, table scraps of veggies, crushed egg shells, and shredded newspapers, but don’t use the glossy sheets. Most newspaper ink now has a soy base and is not harmful. There are garden red worms and fishing red worms and they don’t mix. In other words, do not buy red worms from a bait shop and expect them to eat your garbage. If you are just going to grow a small amount of wheat grass, then it would be cheaper and much more sanitary to purchase a small bag of compost to use for planting.
References :
http://www.organicgardening.com
http://www.motherearthnews.com