pH of 9.4, help

[annette34429]

Can anyone tell me how to safely correct a 9.4 pH? I turned the lights off for 18 hrs with no variation. I will recheck all my source water etc. I don't have a CO2 injector. There is no livestock in this new DSB except the clean up crew, some macroalgae.

Further, can anyone recommend an accurate test kit that doesn't include the use of dumb color charts? I find these things very difficult to interpret.

 

[annette34429]

Source water pre RO/DI 7.6, post RO/DI 8.6.

:?

Help, please. All readings are post yesterday's probe recalibration and post 50% WC.

 

[Anonymous]

If there's no livestock why worry about something like PH?

IMO it's a false high.

 

[biotech_chris]

I would invest in an electronic pH tester with an electrode and digital readout. These generally take a bit of skill to calibrate, but pay off with accuracy.

About the high pH, I would agree with guy. Bring the water to an LFS and ask for a test. Unfotunately any chemical/dip test will be colormetric.

Chris.

 

[Anonymous]

the macro algae could be taking up all the CO2 in the aquarium thus causing the pH to rise. Try checking it at 6am.

I'd bet if you add a couple of fish it would drop right down.