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General Hardness- Part2

From a homeowner’s perspective, very hard water leaves a residue on silverware, glassware, and appliances; deposits in pipes and faucets; and can make it hard for soap to do its job in laundry. Many people in areas with very hard water install whole house water softeners. These devices typically replace calcium carbonate in the tap water with sodium chloride, although a few units use potassium chloride instead. The problem with replacing one molecule with a different one is that although the amount of calcium and magnesium may go down, the amount of sodium goes up by the same amount. Many plants can’t tolerate much sodium in the water, and fish that do better in soft water will have no easier time in sodium-filled water than they would in water with high levels of calcium. What is...

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Lighting In A Plantarium- Part 2

What you will not find in the wild are plants growing for long periods in very deep or muddy water. Such water does not allow enough light to pass through for plants to grow. Some plants do grow in areas where the water is deep and turbid for parts of the year, but these plants typically lose their leaves when water conditions rob them of light, and then regrow their leaves and starts to flower when water levels drop, the current slows, and the water becomes clearer. While adaptive in the wild, this behavior is obviously undesirable in an aquarium plant. Source: Sunken Gardens/ By: Karen A. Randall

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