Tropical Fish Keeping - Aquarium fish care and resources

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fish-freak 02-20-2008 10:19 PM

crushed coral and hardness
Hi i wanted to know, is there a rule for adding crushed coral to raise the hardness of your tank. I have a freshwater tank 40 gallons. For example,

"x" amount of teaspoon of crushed coral per "y" amount of gallons/liters = "z" amount of dH increased.

Thanks for any help you can give me.

herefishy 02-21-2008 02:56 AM

I don't really quite understand the question. Are you looking for some type of formula? If so, I know of none. Using crsuhed coral as a substrate or adding it to your filters as a media acts as buffer to help maintain higher pH and DH. I have never heard of "dosing" as you are explaining. The effects of using coral as a substrate and its effects would be based upon what your water parameters, in terms of pH and DH were to start with.

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