How low can PH be? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 02-16-2008, 09:44 PM Thread Starter
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How low can PH be?

When will low PH harm fish.
I am at PH 6.4 and signs show that I need more CO2.
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post #2 of 3 (permalink) Old 02-16-2008, 11:59 PM
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Mine's pretty steady at 4.9. No harm to fish, but I'm really just keeping Cardinals, AND my KH is less than 1. In a way (KH), it depends on the fish.

Lower pH due to increased CO2 does NOT harm the fish. This does not mean that too much CO2 won't...

Sergio C.
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post #3 of 3 (permalink) Old 02-17-2008, 12:45 AM
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Quote:
Originally Posted by rcalzadilla View Post
When will low PH harm fish.
Quote:
I am at PH 6.4 and signs show that I need more CO2
There is no reason to get so caught up on 'low' PH, your tank is failing because of this. If you think your reactor is up to speed and can handle you tank size efficiently as you say, well..... just up your co2 rate then....real easy


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