Indoor vermicomposting bins do require maintenance just like a tropical fish tank they have a range of conditions that should be monitored and corrected where necessary.
1. Moisture levels; the contents of your bin should be no dryer than a damp sponge. There should be no standing water at the bottom.
2. Temperature; composting worms prefer a temperature range of 25-30 Celsius (78-83 F) they are tropical in nature.
3. Food to bedding ratio; the guideline for vermicomposting is 1 square foot of composting surface area to 1 pound of worms to 1 Litre of food material per week.
4. Harvest the castings; as your worms convert food and bedding into vermicast they naturally create layers of material that get deeper and deeper. Don’t let the bin get more than 6 inches deep, keep the surface area guideline in mind.
5. Aeration; worms need air and so do the micro-organisms they rely on to create vermicompost.
Balancing your indoor bin is important to achieving a steady colony of worms that can grow to accommodate your composting needs. In ideal conditions as discussed in this post, adult worms should be laying an egg sack at least, every 3 months.