On average, a Grobo costs approximately $15 USD a month to operate and maintain.

The two costs associated with maintaining your Grobo are:

  • Energy (LED lighting): Approximately $5 per month on average (depending where you live, this can be susceptible to change)
  • Nutrients: Approximately $10 per month

Therefore, the total cost is approximately $15 per month, which would be approximately $180 per year. 

Don't forget that pH probes are known to expire yearly, costing about $79.99 to replace. How long does a pH probe last for?

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