Hydroponic nutrients will not kill fish or other forms of aquatic life if not in excess. As long as the nutrients are properly dissolved and diluted, it will not kill fish or any form of aquatic life. Potassium, phosphorus, iron, calcium, and magnesium are beneficial to both plant and aquatic life.

Can I use hydroponic nutrients in aquarium?

Fill the aquarium with water, and either add hydroponic nutrients or for more fun, add several aquarium fish. If adding fish, do not add any fertilizer for the plants. The fish will eat and provide nutrients to the plants with waste. The plants will suck up nutrients for the water, acting like a filter.

Can you use fish in hydroponics?

Any type of fresh water fish works well in an aquaponic system. Tilapia is perhaps the most widely grown aquaponics fish, but aquaponic gardeners are also growing catfish, bluegill, trout, and even red-claw crayfish. ... There are also only a few limits to the types of plants you can grow in an aquaponics system.