This number is variable, so I will go off of the history of my business, Aquatic Designs, Inc. This information can be found in the, “Aquarium Maintenance Business Preview Course” at Teachable. It’s free.
Once established, one can easily earn from $50 – $75 per hour or more. They could eventually break six figures in sales as a sole employee and even higher with employees. The business can be profitable well within a year with just a few accounts (5 or less depending on expenses such as licenses, accounting, insurance or the size of aquariums).
Currently, I earn an average of $85 per hour and gross over $70,000 per year with a 75% profit margin. I average around 16 hours per week doing aquarium maintenance. This is in addition to some other side hustles.