Water Hardness Products

Aquarium water hardness is generally regulated by products containing calcium carbonate. Once dissolved the calcium ions will increase the dissolved mineral level and increase the pH.

Coral sand and oyster shells are used to constantly buffer these levels in the aquarium. As water passes over the surface calcium is liberated and the result is hard water. Coral sand or oyster shells can also be added to a box filter or other suitable aquarium filter.

When setting up a new fish tank or doing water changes more refined calcium carbonate is used. Hardness powders or liquid 'milks' are added to the new water and may take sometime to dissolve. By following the manufacturer's instructions the pH and hardness will be raised in a way that lasts longer than the use of a pH only product.

Water hardness products currently at eBay auction are displayed below. Also see the full range of water hardness products available from eBay stores

	Aquarium API KH Carbonate Hardness Test Kit AU $10.95
	API CARBONATE HARDNESS TEST KIT AU $11.00
	API Aquarium Fish Tank Carbonate Hardness KH Test Kit AU $12.95
	API Aquarium Carbonate General Hardness GH KH Test Kit AU $14.95
	Aquasonic Aquarium KH Carbonate Hardness Generator 1KG AU $17.95
	API Aquarium Fish 5 in 1 Test Strips Kit PH, Nitrate, Nitrite, GH, KH Hardness. AU $28.50
	NEW API Aquarium Fish Master Reef Test Kit, Nitrate, Hardness, Phosphate Calcium AU $49.95
	Aquasonic Aquarium KH Carbonate Hardness Generator 10KG AU $89.95

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Aquarium Water Hardness Reading

Aquarium Hardness Guide | Aquarium Water Guide