Re: Will it kill them?! Dwarf Otos
I knew that was the cause for pH swing. I was using miko powder which raises the GH to 3-4, kh to 1-2 and pH 7.4. So when I add co2 the pH swings from 7.4 to 6.8 in three days. That is why I added crushed coral. Now GH is 9, kg is 4 and pH is 7.8. The pH swings from 7.8 to 7.6.
The fluvial substrate tries to stabilize the pH at 6.5. Will remove the co2 and coral when the plants have grown well.