What the Heck

[corrosionjerry]

Ok I purchased an electronic PH meter device and I checked the two tanks that I am keeping Discus in...In the tank that My group of 6 2.5-3" Juviniles are in ( 50Gallon grow out tank ) the PH is sitting at 6.4

The quarenteen tank that I have two full size Discus in (33 tall ) the PH is 5.5
How is this possible / I use the same aged water for water changes etc...

The only difference in the tanks is the grow out with 6 juviniles is a bare bottom tank

The 33G with 2 Discus has a small amount of sand on the bottom and two plants a crypt and apongen...

what the heck gives........

[Frankr409]

Ok I purchased an electronic PH meter device and I checked the two tanks that I am keeping Discus in...In the tank that My group of 6 2.5-3" Juviniles are in ( 50Gallon grow out tank ) the PH is sitting at 6.4

The quarenteen tank that I have two full size Discus in (33 tall ) the PH is 5.5
How is this possible / I use the same aged water for water changes etc...

The only difference in the tanks is the grow out with 6 juviniles is a bare bottom tank

The 33G with 2 Discus has a small amount of sand on the bottom and two plants a crypt and apongen...

what the heck gives........

Interesting. I would re-calibrate the probe before putting it into the 33g tank, and see if the PH is still different.

[Graham]

As Frank stated re-calibrate and test and then believe the reading that you're getting.

Tall tanks have less surface area, therefore less gas exchange, therefore higher CO2, therefore lower pH...toss an airstone in

G

[corrosionjerry]

Interesting. I would re-calibrate the probe before putting it into the 33g tank, and see if the PH is still different.


Just was recalibrated in a known solution....

[corrosionjerry]

As Frank stated re-calibrate and test and then believe the reading that you're getting.

Tall tanks have less surface area, therefore less gas exchange, therefore higher CO2, therefore lower pH...toss an airstone in

G


I will try the airstone... thanks for the advice

[Don Trinko]

I have had my storaage tanks test 6.8 ph but after I stir the water it is 7.4 ph . Don T.

[Harriett]

A tip: If one of these tanks is still a QT tank, remember that the probe for the pH tester will be moving possible pathogens to your other tank if they exist. CLEAN the tester after using it in the QT tank.

[corrosionjerry]

good point... thanks