PH..

[danangelo]

Ever since I switched and got me an apex I can see that the PH goes up when the temp goes up this is just 1 degree that it fluctuate during the day when lights come on but when I turn on the AC it maintains 77.2 and the PH stays 8.03 at 78.3 the PH goes up 8.15 to 8.2..I am not really that concerned about the PH I am just curious if there really is a correlation or is just a coincidence. .but the graph shows it almost exact everytime...what do you guys think

 

[JOKER]

The lights make your ph go up.

 

[danangelo]

I know the lights bring it up..but when the temp goes up so does the PH..once temp is constant 77.3 when I have the AC it comes back down to 8.05 or around that ..

 

[JOKER]

My temp doesn't go up with my lights, but as soon as lights come on ph starts very noticeably going up for a period of time then stabilizes until lights start ramping down. Temp could also affect it

 

[mcarroll]

Coincidence. Try watching it with the lights out for a whole day and I bet it won't happen. You're just noticing the effects of photosynthesis drawing CO2 from the water. It's VERY efficient.

With high-power lights (T5 or halide), you'll see a temperature increase solely due to the lights being on too....a degree or two, depending on things.

FWIW, I think CO2 solubility (which dictates pH) in water does vary with temperature, but I think you'd need a pretty wide temperature swing to notice a difference from that.

-Matt

 

[danangelo]

Coincidence. Try watching it with the lights out for a whole day and I bet it won't happen. You're just noticing the effects of photosynthesis drawing CO2 from the water. It's VERY efficient.

With high-power lights (T5 or halide), you'll see a temperature increase solely due to the lights being on too....a degree or two, depending on things.

FWIW, I think CO2 solubility (which dictates pH) in water does vary with temperature, but I think you'd need a pretty wide temperature swing to notice a difference from that.

-Matt

Ya It was cool to look at the graphs its consistent with the changes..the temp swing doesn't change more than 1 degree its really stable..Thanks for the info Matt..

 

[Randy Holmes-Farley Verified Community Expert]

I agree that the diurnal (daily) pH swing that we all see is from daily consumption and production of CO2 (not temperature changes).

However, unless the bottom of that swing gets below 7.8, I wouldn't worry about it. It happens even in coral reef lagoons.

 

[Acro]

I agree that the diurnal (daily) pH swing that we all see is from daily consumption and production of CO2 (not temperature changes).

However, unless the bottom of that swing gets below 7.8, I wouldn't worry about it. It happens even in coral reef lagoons.

Glad to see you over on here randy

 

[Randy Holmes-Farley Verified Community Expert]

Glad to see you over on here randy

Thanks!

Happy Reefing.

 

[danangelo]

I agree that the diurnal (daily) pH swing that we all see is from daily consumption and production of CO2 (not temperature changes).

However, unless the bottom of that swing gets below 7.8, I wouldn't worry about it. It happens even in coral reef lagoons.

Thanks ya I don't usually worry about ph I was just curious watching the graph on fusion and it was consistent with the temp but when the ac keeps the temp lower it will bring down the ph then when I let it get hotter it goes up it might be just a coincidence. .

 

[leptang]

Its a good thing if the ph is going up with the temp, oxygen drops at higher temperatures, photosynthesis and oxygen is the main reason your ph goes up. You are lucky the ph isnt dropping, i think oxygen really starts to drop past 80 degrees Fahrenheit, which i would dose kalkwasser if ph drops with the benefit of of the extra co2 to raise the ph back up from the kalk.