I misunderstood what this thing is. Would help if I read the link FIRST before posting. So it's a small machine installed in restaurants etc. to process waste into a dry, sanitized material. They're not selling the product, but the machine itself. Yeah, definitely not composted. I'd love to have some of that stuff to add to my compost bin though! I think it would require some trial and error to find a good blend for composting it. I would think if it's mostly food waste you're going to need some browns to blend it with. Wood shavings or sawdust would be ideal, because the particle size of the food is already reduced and you could get a nice product pretty fast requiring no sifting. As far as pH testing, you can mix some of it into water - distilled preferred, and use about 10x as much water - and then use a pH paper or pH meter to check it. The pH is going to reflect whatever the food waste was that went in, but the material is not stable, as it will begin to decompose as soon as it is hydrated and in contact with soil microbes. The composting process will bring it toward a neutral pH as it does with all organic matter. If you are concerned about how it will affect your soil, compost it first.

I have a friend who says starfish exoskeletons may have too much calcium. I found a list of NPK values for various compost ingredients including starfish on another site. The person who posted it there found it online but didn't give the source. She says at the bottom: "P.S. I just copied and pasted the entire list from the site onto MS word, then onto here. I didn't write any of the notes next to the compost ingredient." Here is the link from my Google search: my.gardenguides.com/forums/topic/46561 You'll need to scroll down in the post. Here is the list: Alfalfa Hay: 2.45/05/2.1 Apple Fruit: 0.05/0.02/0.1 Apple Leaves: 1.0/0.15/0.4 Apple Pomace: 0.2/0.02/0.15 Apple skins(ash) : 0/3.0/11/74 Banana Residues (ash): 1.75/0.75/0.5 Barley (grain): 0/0/0.5 Barley (straw): 0/0/1.0 Basalt Rock: 0/0/1.5 Bat Guano: 5.0-8.0/4.0-5.0/1.0 Beans, garden(seed and hull): 0.25/0.08/03 Beet Wastes: 0.4/0.4/0.7-4.1 Blood meal: 15.0/0/0 Bone Black: 1.5/0/0 Bonemeal (raw): 3.3-4.1/21.0/0.2 Bonemeal (steamed): 1.6-2.5/21.0/0.2 Brewery Wastes (wet): 1.0/0.5/0.05 Buckwheat straw: 0/0/2.0 Cantaloupe Rinds (ash): 0/9.77/12.0 Castor pomace: 4.0-6.6/1.0-2.0/1.0-2.0 Cattail reeds and water lily stems: 2.0/0.8/3.4 Cattail Seed: 0.98/0.25/0.1 Cattle Manure (fresh): 0.29/0.25/0.1 Cherry Leaves: 0.6/0/0.7 Chicken Manure (fresh): 1.6/1.0-1.5/0.6-1.0 Clover: 2/0/0/0 (also contains calcium) Cocoa Shell Dust: 1.0/1.5/1.7 Coffee Grounds: 2.0/0.36/0.67 Corn (grain): 1.65/0.65/0.4 Corn (green forage): 0.4/0.13/0.33 Corn cobs: 0/0/2.0 Corn Silage: 0.42/0/0 Cornstalks: 0.75/0/0.8 Cottonseed hulls (ash): 0/8.7/23.9 Cottonseed Meal: 7.0/2.0-3.0/1.8 Cotton Wastes (factory): 1.32/0.45/0.36 Cowpea Hay: 3.0/0/2.3 Cowpeas (green forage): 0.45/0.12/0.45 Cowpeas (seed): 3.1/1.0/1.2 Crabgrass (green): 0.66/0.19/0.71 Crabs (dried, ground): 10.0/0/0 (I personally just crush the shells with my foot) Crabs (fresh): 5.0/3.6/0.2 Cucumber Skins (ash): 0/11.28/27.2 ( WOW!!!! Who knew???) Dried Blood: 10.0-14.0/1.0-5.0/0 Duck Manure (fresh): 1.12/1.44/0.6 Eggs: 2.25/0.4/0.15 Eggshells: 1.19/0.38/0.14 Feathers: 15.3/0/0 Felt Wastes: 14.0/0/1.0 Field Beans (seed): 4.0/1.2/1.3 Feild Beans (shells): 1.7/0.3/1.3 Fish (dried, ground): 8.0/7.0/0 Fish Scraps (fresh): 6.5/3.75/0 Gluten Meal: 6.4/0/0 Granite Dust: 0/0/3.0-5.5 Grapefruit Skins (ash): 0/3.6/30.6 (And people throw these things away? Wow!) Grape Leaves: 0.45/0.1/0.4 Grape Pomace: 1.0/0.07/0.3 Grass (imature): 1.0/0/1.2 Greensand: 0/1.5/7.0 Hair: 14/0/0/0 Hoof and Horn Meal: 12.5/2.0/0 Horse Manure (fresh): 0.44/0.35/0.3 Incinerator Ash: 0.24/5.15/2.33 Jellyfish (dried): 4.6/0/0 Kentucky Bluegrass (green): 0.66/0.19/0.71 Kentucky Bluegrass (hay): 1.2/0.4/2.0 Leather Dust: 11.0/0/0 Lemon Culls: 0.15/0.06/0.26 Lemon Skins (ash): 06.33/1.0 Lobster Refuse: 4.5/3.5/0 Milk: 0.5/0.3/0.18 Millet Hay: 1.2/0/3.2 Molasses Residue (From alcohol manufacture): 0.7/0/5.32 Molasses Waste (From Sugar refining): 0/0/3.0-4.0 Mud (fresh water): 1.37/0.26/0.22 Mud (harbour): 0.99/0.77/0.05 Mud (salt): 0.4.0/0 Mussels: 1.0/0.12/0.13 Nutshells: 2.5/0/0 Oak Leaves: 0.8/0.35/0.2 Oats (grain): 2.0/0.8/0.6 Oats (green fodder): 0.49/0/0 Oat straw: 0/0/1.5 Olive Pomace: 1.15/0.78/1.3 Orange Culls: 0.2/0.13/0.21 Orange Skins: 0/3.0/27.0 (Right up there with Grapefruit. Note: both can attract fruit flies so, bury them in the compost) Oyster Shells: 0.36/0/0 Peach Leaves: 0.9/0.15/0.6 Pea forage: 1.5-2.5/0/1.4 Peanuts (seed/kernals): 3.6/0.7/0.45 Peanut Shells: 3.6/0.15/0.5 (I grind them up in the food processor first) Pea Pods (ash): 0/3.0/9.0 (I cut them up with a pair of scissors while shelling them) Pea (vines): 0.25/0/0.7 Pear Leaves: 0.7/0/0.4 Pigeon manure (fresh): 4.19/2.24/1.0 Pigweed (rough): 0.6/0.1/0 Pine Needles: 0.5/0.12/0.03 Potato Skins (ash): 0/5.18/27.5 Potaote Tubers: 0.35/0.15/2.5 Potatoe Vines (dried): 0.6/0.16/1.6 Prune Refuse: 0.18/0.07/0.31 Pumpkins (fresh): 0.16/0.07/0.26 Rabbitbrush (ash): 0/0/13.04 Rabbit Manure: 2.4/1.4/0.6 Ragweed: 0.76/0.26/0 Rapeseed meal: 0/1.0=2.0/1.0=3.0 Raspberry leaves: 1.45/0/0.6 Red clover hay: 2.1/0.6/2.1 Redrop Hay: 1.2/0.35/1.0 Rock and Mussel Deposits From Ocean: 0.22/0.09/1.78 Roses (flowers): 0.3/0.1/0.4 Rye Straw: 0/0/1.0 Salt March Hay: 1.1/0.25/0.75 Sardine Scrap: 8.0/7.1/0 Seaweed (dried): 1.1-1.5/0.75/4.9 (Seaweed is loaded with micronutrients including: Boron, Iodine, Magnesium and so on.) Seaweed (fresh): 0.2-0.4/0/0 Sheep and Goat Manure (fresh): 0.55/0.6/0.3 Shoddy and Felt: 8.0/0/0 Shrimp Heads (dried): 7.8/4.2/0 Shrimp Wastes: 2.9/10.0/0 Siftings From Oyster Shell Mounds: 0.36/10.38/0.09 Silk Mill Wastes: 8.0/1.14/1.0 Silkworm Cocoons:10.0/1.82/1.08 Sludge: 2.0/1.9/0.3 Sludge (activated): 5.0/2.5-4.0/0.6 Smokehouse/Firepit Ash/0/4.96 (I put the ashes from my smoker in the pile) Sorghum Straw/0/1.0 Soybean Hay: 1.5-3.0/0/1.2-2.3 Starfish: 1.8/0.2/0.25 (I'm not saying: "Go out and decimate starfish populations at our local beaches" but, the odd starfish would be okay. Incidentally, the edndoskeletons of starfish are made of Calcium Carbonate which, is slow to break down.) String Beans (strings and stems, ash): 0/4.99/18.0 (Why we throw this stuff away? I have no idea. Look at all that potash!) Sugar Wastes (raw): 2.0/8.0/0 Sweet Potatoes: 0.25/0.1/0.5 Swine Manure (fresh): 0.6/0.45/0.5 Tanbark Ash: 0/0.34/3.8 Tanbark Ash (spent): 0/1.75/2.0 Tankage: 3.0-11.0/2.0-5.0/0 Tea Grounds: 4.15/0.62/0.4 Timothy Hay: 1.2/0.55/1.4 Tobacco Leaves: 4.0/0.5/6.0 Tobacco Stems: 2.5-3.7/0.6-0.9/4.5-7.0 Tomatoe Fruit: 0.2/0.07/0.35 (A note on tomatoe fruit: These should be hot composted. I just let any rotted or insect eaten tomatoes compost in the soil beneath the plants and have "freebees" come back each consecutive year. Hot composting will kill the seeds.) Tomatoe Leaves: 0.35/0.1/0.4 Tomatoe Stalks: 0.35/0.1/0.5 Tung Oil Pumace: 6.1/0/0 Vetch Hay: 2.8/0/2.3 Waste Silt: 9.5/0/0 Wheat Bran: 2.4/2.9/1.6 Wheat (grain): 2.0/0.85/0.5 Wheat Straw: 0.5/0.15/0.8 White Clover (Green): 0.5/0.2/0.3 Winter Rye Hay: 0/0/1.0 Wood Ash: 0/1.0-2.0/6.0-10.0 (A note on Wood ash: Wood Ash can contain chemicals that could harm plants and also carcinogens so, they should be composted in moderation) Wool Wastes: 3.5-6.0/2.0-4.0/1.0-3 Read more: Making Compost at Home : Composting http://my.gardenguides.com/forums/topic/46561#ixzz11xiVExSM

I usually keep a good bit of bedding, in the form of shredded paper in my red wiggler bins. But the BSFL seem to like the environment without the bedding. I like the way they process the food waste so quickly. I do not mind the soupy quality of the bin. Actually, it gives me more leach to make compost tea out of. I am more interested in what to do with the BSFL castings. I did some further digging, (sorry for the pun) and read that the castings from the BSFL is not "stable compost" yet, whatever that means. I do not have any chickens to feed the BSFL to (at least not yet) so I am more concerned about being able to use the black stuff they are producing. I did find a couple of sites that recommended feeding it back through the red wigglers. but its going to take a little redneck ingenuity to devise an deficient mechanism for that to take place.

Interesting question. I would guess (totally a guess!) that it would be partly dependent on the feedings you give the plant. Since they can tap into more nutrients in the soil and are limited to only what you give them in a container, I would vote for the ground grown plants to be more complete. Unless of course, you are providing everything they need in the container. Kate (who is always willing to share an opinion even when she has not done the research)