High PH

[Kurt Hammel]

My tank has been set up for 5 years now and a while back the PH started rising so I disconnected the CO2 scrubber but it keep climbing and now sits at 8.5 at night and climbs up to 8.69-8.7 in the day. What can I do to lower back down?

 

[shakacuz]

if you disconnected your co2 scrubber and your ph is still "climbing", i'd recalibrate your probe, and then test again with the probe and with another ph meter/tester.
i wouldn't be overly concerned, though.

 

[ISpeakForTheSeas]

Also, in case your pH actually is high, the "Solutions to High pH Problems" section of the article below may help:

pH and the Reef Aquarium - REEFEDITION

by Randy Holmes-Farley For many aquarists, pH is not something that they have much experience with aside from their aquarium. For many, pH is almost a black box measurement: something to be considered, but whose physical meaning makes little sense to them. This article will Read more here...

www.reefedition.com

 

[Randy Holmes-Farley Verified Community Expert]

I too expect it is not accurate.

 

[Devisissy]

Dang that's like my tap water. MMM gritty.

 

[Kurt Hammel]

if you disconnected your co2 scrubber and your ph is still "climbing", i'd recalibrate your probe, and then test again with the probe and with another ph meter/tester.
i wouldn't be overly concerned, though.

I checked the probe calibration which read 7.14 instead of 7.01 and is only a couple months old. I will pick up a box test and see what it reads.