The increase in PH got to do with aeration, which is different in each tank/filtration system.
It is also related to pump flow rate & any air stones setup in the tank that increase tank aeration, thus increasing O2 & reduction of CO2.
I would think you have a good filtration system that also help to maintain high O2.
Quote:
http://www.myaquariumclub.com/how-to...arium-498.html
● Aeration - Increasing the oxygen concentration in your water will serve to drive down the carbon dioxide concentration. As discussed above, less carbon dioxide translates to a higher pH. Therefore, you can increase the aeration in the tank to raise the pH.
Quote:
Originally Posted by ongchi8
i think its not the media.. i encounter this problem before using different media...
i post that thread on the stingray forum..
i fell frustrated so i reset my tank using new media, suspecting that it might be the media that cause my ph to rise... but here it goes again.. the same problem
there should be something wrong with my water... but i dont know
our water system at home has a water softener for the whole house... and pass by a carbon filter before it goes to a hose for my water change...
all my other tanks are ok with some arowanas on it..
only this tank with some rays previously occupying it has a problem...
does water softener cause it?
or the carbon filter?
but i have lots of friend hobbyist using it also and all of them are fine...
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