Every organism in your system has its own ideal ph range, but to be on the safe side, the best ph for aquaponics is typically around 6.8 and 7.2. to achieve such balance, make sure to check on your ph levels regularly as fluctuations can easily shock your environment, bringing negative impacts to your crops, fish, and bacteria.. Best ph range for aquaponics a healthy range of ph for most fish and plants is 6 to 7. many plants and fish prefer certain ranges of ph. for this reason, some plants like roses and blueberries will not do well in an aquaponics systems..
