Following table summerize the problems that can be found and theit solutions.
Problem
Symptom
Solution

(1) Oxygen low
· Insufficient Air
· Compost is too compact

· Presence of bad odor
· Compost is a brownish color
· Aerate or mix bin content
· Add dry carbon food
· Stop the wet food

(2) Temperature
· Temperature too high or too low

· Micro-activity is much increased or reduced (e.g Acarid, Mold)
· Move the bin to a cooler or warmer place

(3a) Moist high
· Moisture too high

· Significant increase of Collembola population
· Lack of air symptoms, same as (1)
· Add dry carbon food
· Stop the wet food
· Aerate or spread bin content
(3b) Moist low
· Insufficient Moisture

· No or little compost tea produced
· Compost dries out
· Presence of ants
· Pour water
· Add wet nitrogen food
· Stop the dry food

(4a) PH high
· Too high or basic pH

· Ammoniac smell
· Worms avoid areas (e.g. around ash pile)
· Add acid food in small quantity
(4b) PH low
· Too low or basic pH

· Worms avoid areas (e.g. around an orange)
· Add basic pH food in small quantity

(5) Light
· Too much light

· Worms doesn’t consume or visit enlighten areas
· Cover or shade the waste or the bin

(6a) Food
· Excessive amount of wet nitrogen food
· Filament of mold on the surface of the compost
· Add dry carbon food
· Remove wet food
(6b) Food
· Insufficient Food

· All waste get consumed
· Worms migrate to the surface
· No Mold
· Add dry carbon food
· Add wet nitrogen food