The Planted Tank Forum - View Single Post - Calcium Defeciency
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Old 07-30-2012, 03:54 PM   #19
snausage
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I'm not even sure if red root amaranth is an aquarium plant. Nevertheless, here are some general tips:

1. get pH, gH and kH liquid test kits

2. You can estimate the co2 concentration based on the pH and kH values (google ph kh co2 for a chart)

3. Increasing the rate of co2 diffusion from 5bps to 6 bps is a significant change, so be very careful, especially since you mentioned that you think its already affecting your fish

4. I wouldn't worry about Ca concentration unless your gH is less than 5.
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