The best way is to control the harness and softness of the source water for the aquarium. If you need soft water, then use a water softener or reverse osmosis machine to lower the water hardness. If you need your water harder, then you can purchase remineralizing compounds that you can mix with water change water and then add to your tank. You can find remineralizers at www.bigalsonline.com. Look under Water Treatment > Ph Regulators & Buffers. I recommend Kent's R/O Right.
Yeah.... uh.... get a freaking filter!
There are two ways to help control water hardness: use a packaged water softener or use a mechanical water softening unit. Packaged water softeners are chemicals that help control water hardness.
Yeah.... uh.... get a freaking filter!
There are crystals available in many pet shops that can be placed in a filter to remove hardness. To increase hardness you can add sea shells. To neutralise the water you can get 'Neutralising blocks'. If you are really keen you can use a reverse osmosis filter to remove all the hardness (and other impurities) from the water and then add all the required chemicals to make the water exactly what a specific species requires.
Water hardness or softness refer to a number of water parameters. Most commonly hardness refers to what known as General Hardness(GH), which is basically a measure of the calcium and magnesium salts present in water. There is also Carbonate hardness(KH), which is a measure of the carbonate concentration of the water. Combined, these two form Total Hardness, ie, GH + KH = TH
It depends on the softness or hardness, soft water e.g amazon river is acidic so below pH 7 and is caused by things like decaying vegetation and the elements present in the surroundings. Hard water e.g african lakes are alkali so above pH 7, this is again caused by surrounding areas and elements such as calcium which make it alkali. In the aquarium it can be controlled by chemicals which you can buy at pet shops.
My junk
you cant lower the general harndess of a saltwater aquarium. Why would you even want to?
hello
You can control the oxygen through aeration
It will lower the softness sufficiently. You wouldn't want 100% soft water, you won't like the taste or the amount of sodium in it.
This can be a problem if you have very "soft" water. Water "hardness" or "softness" is determined by the amount and types of minerals dissolved in the water. In areas with "hard" water, many people purchase "water softeners" which remove some minerals and replace them with others.