Aquaponics Tanks: Critical Parameter to Monitor

What is a critical parameter to monitor in the start-up of aquaponics tanks, but it should decrease after an extended period?

If it remains high, it can be cause for concern.

Option 1: Temperature

Option 2: pH level

Option 3: Ammonia concentration

Option 4: Dissolved oxygen level

Final answer:

The critical parameter to monitor in the start-up of aquaponics tanks that should decrease after an extended period is the Ammonia concentration. If the ammonia concentration remains high, it can be cause for concern as it can lead to poor water quality and negative impacts on the organisms in the tank.

Explanation: The critical parameter to monitor in the start-up of aquaponics tanks that should decrease after an extended period is the Ammonia concentration. Ammonia concentration is an important factor in determining the amount of phytoplankton growth in lakes and ponds. When there is a large input of nitrogen and phosphorus, such as from sewage and runoff from fertilized lawns and farms, it can lead to algal blooms. These algal blooms can reduce light penetration and cause severe oxygen depletion. If the ammonia concentration remains high in an aquaponics tank, it can be cause for concern as it can lead to poor water quality and negative impacts on the organisms in the tank.