Ph?

[Sawdonkey]

I'm in the "your probe is wrong" camp. 6.8 is very low and unlikely. Alk is a ph buffer so if it is in line, you ph is likely not too far out of balance.

I doubt smoking in the room has any impact. I have a ventless fireplace in the same room as my tank and I use is somewhat often. Hasn't caused issues.

I don't even have a ph test.

 

[maidia]

could you add baking soda to your top off water to raise the pH slowly?

I highly doubt your pH is 6.8. Calcium reactors run at around 6.5. I think at 6.8, you're coral skeletons will start to dissolve.

Also, the pH should be highest just before lights out and lowest in the morning before the lights turn on.

I wouldn't do anything until you calibrate your monitor.

+1, when running the CALR if the PH lower than 6.8 (some set at 6.95) then turn off the CO2..

 

[madjoe]

Anyway, I always trust Randy Holmes:

Low pH: Causes and Cures

Lol thats the one i read was first to pop up when i googled and i dont plan on doing anything til i know test is good

 

[labas39]

What's the pH of distilled water? I would think it's at 7. I don't have any to test but if it's 7, then you can use that for a quick confirmation.

I just tested my RO/DI water and it was in the 8's so it's no help.

 

[IHaveCrabs]

I run my frag tank on an opposite light schedule from my display and my dosers only run when the main display light is off.

That seems to keep the pH stable but I don't chase it if it goes a little out of wack.. I just check salinity, kH, and Ca and if that is fine, no worries.

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