So you decided to use a square worm-bin (meaning anything not round, could be long .... you know what I mean) for your Red Wigglers Eisenia Fetida.

The formula for calculating the surface area of your worm-bin:

1. Measure the width and length  of your potential worm-bin. Lets assume it is 50cm x 100cm.
2. Multiply the measurements. (50 x 100 = 5 000)
3. The result will be 5 000 cm²
4. Allow approximately 500g worms per 1 000 cm² or 1 pound for 1 square feet
5. In this case optimal stocking levels for Eisenia Fetida will be 2.5 kg.
6. Your Red Wigglers can double every 3 months.
7. Order 500g Red Wigglers and given the right conditions, you may achieve optimal stocking levels of Eisenia Fetida within 6 months.
8. Easy steps to calculate surface area of a *round* wormbin

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