Data from Penn State has shown that there were no significant differences with each five compost diets for the red wiggler earthworm (Esienia fetida.) Based on observations, bin A (paper waste) had no obvious problems, bin B (worm food) that has shown higher levels of nutrients, also had the highest rates of worm deaths and shown to be the least productive bin. pH levels of this bin has also been acidic throughout the 6 weeks of composting, starting after the first feed of the worm food (contains saw dust, cornmeal, wheat) that was given the first week, suggesting an unfavorable diet. Bin C (fruits and veggies) have shown the most productive activity of the red wiggler and produced greater amounts of worm casts compared to other bins. Bin D (buffalo manure) took awhile for the worms to start composting. This may be due to the fact that the manure had not been pre-processed, dried out or weathered down, because of the smell of ammonia or salt. Bin E (kitchen waste) was the second bin that had more acidic pH levels, as well as more worm deaths.

• A C:N ratio of 25:1 was stated as "optimal."
• Interesting that Bin B (worm food) and Bin E (kitchen waste) were more acidic and subsequently had more deaths.

The kitchen waste bin had "ground coffee, eggshells, and tea bags", the coffee and tea are likely acidic and I assume the eggshells were not enough to neutralize the acidity. Dang, my bin has a lot of ground coffee and tea since it's mainly kitchen scraps, I wonder if the acidity is too high.