Buffering Capacity / Carbonate Hardness (KH)
Buffering capacity refers to water's ability to keep the pH stable. Think of it as a sponge. When you pour acid into the tank, it absorbs and neutralise the acid and so your pH only drop a little.
Buffering capacity and pH
[edit] Notes
This water parameter is often ignored by many aquarists. But too low a KH can cause pH shock disease and death in aquatic animals.
Buffering capacity can be quantified using the buffer intensity, b, defined mathematically in a way that is easy to calculate, but that isn't worth detailing here.
The total amount of DIC largely determines the buffering capacity of freshwater, and the ratio of these species with one another largely determines the pH. Carbon dioxide dissolves readily in water.
Are you wondering if Prozac will damage the buffering capacity of your tank? The answer to all these questions is--I don't know. I'm not certain Freud had puffers in mind when developing his "free association" therapy.
You can easily appreciate when most of the buffering capacity is below the lower end of the test, you are going to miss it. Q: Why are they doing this? A: I have no idea. Morin has a "thing" about controlling pH in aquaria.
Thus, in practical freshwater usage, the terms carbonate hardness, acid binding, acid buffering capacity and alkalinity are used interchangeably. In an aquarium, KH acts as a chemical buffering agent, helping to stabilize pH.
It is also important to remember that the pH is also affected by the buffering capacity of the water. Assorted compounds in the water will tend to keep the pH stable at the current level.
Carbonate hardness or KH is a measure of the water's natural buffering capacity, commonly and confusingly referred to as carbonate hardness (potentially confusing with the other hardness), ...
Carbonate hardness is important because it dictates your tank's Buffering Capacity. Buffering capacity is the ability of a given body of water to resist changes in pH.
Because softer water has less buffering capacity due to a lack of CaCO3 (a natural buffer), and is subject to pH crashes, where the pH falls dramatically causing harm to aquarium inhabitants.
Buffering Capacity (KH, Alkalinity)
Buffering capacity refers to water's ability to keep the pH stable as acids or bases are added.
The property of water to resist changes in pH is known as buffering capacity. You can determine the capacity of your buffering system by measuring total hardness.
This natural buffering capacity makes it hard to get the pH to stay lower. It is also possible that your substrate adds buffering capacity as well as any rocks you might have. Driftwood and plants will not raise pH.
Crushed coral and crushed limestone will dissolve, raising the hardness and pH, as well as increasing the buffering capacity of the water. These are used in marine setups and with fishes like African Rift Lake cichlids.
Furthermore, water treated this way will be practically depleted of carbonates which means a KH of almost 0 (almost no buffering capacity).
it's buffering capacity). Alkalinity is usually measured as either mg/l (milligrams per litre) CaCO3 (Calcium Carbonate) or meq (milli-equivalents). 1 meq = 50 mg/l CaCO3. The ideal range of alkalinity for fish farming is 20 - 300mg/l.
It also indicates the buffering capacity of your water. Buffering capacity is the ability of your water to neutralize added acid without significantly changing the pH.
Natural water should be monitored for pH/alkaline buffering capacity at the very least, and a supply of change water or chemical preparation be kept close at hand for adjustment.
When altering pH, other factors, such as buffering capacity, should also be considered. Due to the complexity of altering pH I will not go into detail about methods for altering.
alkalinity
A measure of your water's resistance to changes in pH (or "buffering capacity"). Commonly measured as carbonate alkalinity (kH) or total alkalinity (gH). Alkalinity can be raised by adding a buffer when you condition your water.
Once it was understood that its use could rapidly deplete the buffering capacity of a tank, the use of buffering compounds were added in combination.
This test determines how stable your tank water is relative to a shifting pH. It can be thought of as your tank's buffering capacity or it's ability to keep the pH level stable.
chemistry, and managing pollutants in the fry aquarium is made all the more difficult by the need to maintain low mineral content in the aquarium water during development in order to prevent sterility affecting the fishes - the buffering capacity of ...
the borate compound (sodium tetra borate hexahydrate) you may wish to use boric acid. The latter is more difficult to use though. The former is a lot simpler to add by the drip method and is a more stable form in terms of its buffering capacity.
CO2 is a product of the biological combustion of oxygen and carbon and is a waste product of animal metabolism and plant respiration. CO2 levels have a direct effect on the buffering capacity of the aquarium water, and alter the pH.
water can be purchased from many LFSs for quite a small cost, or you can install your own RO filter to produce RO water. RO water should not be used “neat' as it has none of the minerals essential to fish health and has no buffering capacity ...
However, carbonates in the water act as buffers, which keep the pH from changing drastically. Therefore, it is necessary to measure the carbonate hardness regularly. Performing regular water changes will help to keep the water's buffering capacity ...
 See also: Buffer, Water, Fish, Aquarium, Plants
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