KH - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 2 Old 10-31-2010, 07:38 PM Thread Starter
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I have a 40 gallon fresh water tank. I've had it for years and it has run very stable without major problems. I have 4 clown loaches, 3 red eye tetras, and 4 neon tetras. The loaches I have had for ~5 years. My pH runs 6.8-7.0 consistently. Ammonia, nitrate, and nitrite are zero. Phosphate levels fluctuate, but respond to water changes and gravel cleaning. The GH fluctuates anywhere from 4 to 12. When I do water changes with RO water, the GH gets diluted and falls down. I have a set up to make the RO water. The Kh I am not able to detect. I have tried several different KH and alkalinity test kits and still I don't detect any KH. I don't have any pH fluctuations, so my pH is stable. Since my fish do well, I have not worried about the KH. Is there a desirable KH level? Should I bother trying to raise the KH (although I don't want to fool around with the pH).
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post #2 of 2 Old 11-04-2010, 12:27 PM
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This is identical to your post and thread to which several of us have responded:

That thread was under "Freshwater Aquariums" which is where it should be I think.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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