Martin cape
Member
Hi guys,
Water out the tap has a KH of roughly 0.5 and a pH of 7.6. So, with me wanting to inject CO2 I decided to increase the KH to 5 to avoid such a large pH swing during injection and when it's off.
But, I've just checked the pH and its 8.1. So I now have tank water with a pH of 8.1 and a KH of 5.
But according to this:
AquaScaping World Magazine - Understanding the pH/KH Relationship
When co2 is at its ideal the pH will be 6.8, that's a swing of 1.3 units!!! That seems a lot.
Whereas if I just stay with the tap water, the pH will change from 7.6 down to 6!!!
Both massive swings. Are they too much of a swing for the fish?
Water out the tap has a KH of roughly 0.5 and a pH of 7.6. So, with me wanting to inject CO2 I decided to increase the KH to 5 to avoid such a large pH swing during injection and when it's off.
But, I've just checked the pH and its 8.1. So I now have tank water with a pH of 8.1 and a KH of 5.
But according to this:
AquaScaping World Magazine - Understanding the pH/KH Relationship
When co2 is at its ideal the pH will be 6.8, that's a swing of 1.3 units!!! That seems a lot.
Whereas if I just stay with the tap water, the pH will change from 7.6 down to 6!!!
Both massive swings. Are they too much of a swing for the fish?