rhodes_96;4233653; said:Test the kh / gh of your water.
odds are it's above 6-7 dkh. Two weeks of cycling maybe you need more time. I would re test the water in a few days just to makes sure parameters are still ok
You could try some acid buffering products or some plants and driftwood, and or wait till your bio filtration matures more.
I have bb tanks that the ph always rises maybe 0.1-0.2 after a water change even when the change water has been buffered for more than 24hours. I allow for this in the buffering process so ph is fine and will stay within parameters until my next water change.
So i would need to pick up water hardness test kit then to test kh and gh. What is odd is that this never happened when i had to cycle my 75g tank. Is this a more obvious issue when cycling bigger tanks? with more water???