Great Lakes
Always do right, not popular...
This is an attempt to make all newcomers to the marine world understand why marines stocking levels are significantly smaller than tropicals.
I am not a marine biologist, so I will start this out with what I am able to. When I get some additional imput, I will turn it into an article giving all contributors credit.
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Freshwater and marine fish differ greatly in the way they utilize their environment,(water).
A freswater fish will ingest small amounts of water with its food and various activities. Its body will also absorb water to aid in its hydration. Excess water is then expelled with the urine. The impact this physiological behavior has on stocking levels is twofold. The minimal ingestion and absorbsion of water limits the health hazards of toxins in the water, and the water in the urine helps dilute it making a minimal impact on its surroundings.
A marine fish, for the most part, is the direct opposite. It ingests large amounts of water continuously. And instead of absorbing water to aid in hydration, the marine fish expells water from the inside out. And since it flushes its cells with water, very little of it is used in the digestive tract, making a marine fishs urine very concentrated. The twofold impact here? The marine ingests so much water during its day that the risk of toxins getting into its system are far greater, and their urine can have a greater effect on its immediate surroundings and the overall parameters in the tank.
So in summary, you can see how the Marine fish is practically a filter regarding the way they ingest large amounts of water and flush it through all their cells. This is why water quality is so very important in the marine environment.
I hope this helps many of you. Knowing or being told what appropriate stocking levels are is one thing. Once I understood why, I have a lot more respect for the health of my fish and would not dream of having a crowded tank.
Cheers, GL
I am not a marine biologist, so I will start this out with what I am able to. When I get some additional imput, I will turn it into an article giving all contributors credit.
************************************
Freshwater and marine fish differ greatly in the way they utilize their environment,(water).
A freswater fish will ingest small amounts of water with its food and various activities. Its body will also absorb water to aid in its hydration. Excess water is then expelled with the urine. The impact this physiological behavior has on stocking levels is twofold. The minimal ingestion and absorbsion of water limits the health hazards of toxins in the water, and the water in the urine helps dilute it making a minimal impact on its surroundings.
A marine fish, for the most part, is the direct opposite. It ingests large amounts of water continuously. And instead of absorbing water to aid in hydration, the marine fish expells water from the inside out. And since it flushes its cells with water, very little of it is used in the digestive tract, making a marine fishs urine very concentrated. The twofold impact here? The marine ingests so much water during its day that the risk of toxins getting into its system are far greater, and their urine can have a greater effect on its immediate surroundings and the overall parameters in the tank.
So in summary, you can see how the Marine fish is practically a filter regarding the way they ingest large amounts of water and flush it through all their cells. This is why water quality is so very important in the marine environment.
I hope this helps many of you. Knowing or being told what appropriate stocking levels are is one thing. Once I understood why, I have a lot more respect for the health of my fish and would not dream of having a crowded tank.
Cheers, GL