CO2 and fish - The Planted Tank Forum
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post #1 of 3 (permalink) Old 04-12-2018, 10:42 AM Thread Starter
Algae Grower
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CO2 and fish

In my experience co2 at recommended 1/1.1 ph drop stresses fish. Have calibrated ph controllers and observe fish are less active when co2 is on then when co2 tanks empty or during off hours.
Gone to low high tech with bmled dutch xb light dimmers set to 0 from 15%, co2 ph drop to 0.9, and established low light plants. Fish are active.
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post #2 of 3 (permalink) Old 04-12-2018, 01:09 PM
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Sounds like YOUR tank is happy at 0.9 pH drop, half the battle we face is determining where each of our own tanks are the most happy whether it be ferts, light, CO2, WC schedule etc. etc.

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post #3 of 3 (permalink) Old 04-13-2018, 03:00 AM
Algae Grower
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My tank houses 40+ tropheus and has a 1.15 drop in ph daily from co2 injection and all fish are happy, healthy extremely active and breeding.
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