The answer is no. There is no “one” pH level that is perfect for all fish. You will hear people in the hobby state that you should keep the pH in aquariums at 7.0. Yes, 7.0 is neutral, and many tropical fish species will live comfortably in this pH range.
You will hear people in the hobby state that you should keep the pH in aquariums at 7.0. Yes, 7.0 is neutral, and many tropical fish species will live comfortably in this pH range. But you do not need to panic if your pH is not exactly 7.0. Tropical fish do have recommended levels of pH that they will thrive in. Every tropical fish hobbyists wants to match the pH of the natural environment from which or pet fish originate.
Most tropical fish (with the exception of a few species) will live in a wide range of pH levels. I’ve had great SUCCESS in the hobby with aquarium water with pH levels between 6.8-7.8. Aquarium pH levels may effect growth, coloration, and breeding among certain types of tropical fish.
High Ph - Tropical Fish Keeping - Aquarium fish care and resources
What tropical fish work well in hard, high Ph water
Tropical freshwater aquarium fish reside in a wide range of water habitats from fast-flowing mountain streams, to great lakes, to slow-moving rainforest rivers. Each of these biotopes, besides having unique fish species, has unique water properties due to environmental factors. Because fish do come from unique natural water sources, their water in captivity should have similar characteristics. To recreate natural settings, the aquariast should have some knowledge of basic water chemistry, specifically pH, water hardness, and the nitrogen cycle.The pH level in your freshwater tropical fish tank effects many aspects of your aquarium water. Aquarium pH levels that measure below 6.0 will slow the . The beneficial bacteria needed to convert the poisonous ammonia must have a pH above 6.0 to thrive and multiply. If the fish tank pH does fall below 6.0, your aquarium tank my go through another cycle. The result may be fatal to your tropical fish.When you read , you will notice a suggested or needed Aquarium pH level for that particular tropical fish. Many people are confused as to what the pH is, or how you manage it.There are many people that make the mistake of trying to adjust their aquarium water pH to meet the exact “suggested” pH levels of the tropical fish they are keeping. This can be a huge mistake.