Can you put lemon juice in a fish tank?

Here's why:

* Acidic pH: Lemon juice is highly acidic and will drastically change the pH of your tank water. Fish are very sensitive to pH changes and can become stressed, ill, or even die from an unsuitable pH.

* Toxicity: Lemon juice contains citric acid and other compounds that are toxic to fish.

* Disrupts the ecosystem: Lemon juice will kill beneficial bacteria in your tank that are essential for maintaining water quality. This can lead to algae blooms and other problems.

If you are looking to adjust the pH of your tank water, consult a fishkeeping expert or use aquarium-safe pH adjusting solutions.