8.7 Ph

[Enchanted Reefs]

I’ve been dosing kalkwasser and have a Co2 scrubber so that has raised my ph to 8.7
Is this something I should worry about? What negative effects should I expect from my corals for having ph this high?

I primarily have sps

cal- 410
Mag- 1310
Kh- 8.5

 

[Duncan62]

I’ve been dosing kalkwasser and have a Co2 scrubber so that has raised my ph to 8.7
Is this something I should worry about? What negative effects should I expect from my corals for having ph this high?

I primarily have sps

cal- 410
Mag- 1310
Kh- 8.5

Do you need the co2 scrubber?

 

[blaxsun]

A pH of 8.4-8.5 seems to be the acceptable levels for upper limits.

 

[Enchanted Reefs]

Do you need the co2 scrubber?

No I can take it off if needed. Kalk intake has increased so I don't think I will need it to keep ph above 8.3

 

[redfishbluefish]

How are you measuring pH and if it's with a probe, when was it last calibrated? 8.7 pH is darn near impossible unless you're adding strong bases.

 

[Sean Clark]

How are you getting your pH value? If via probe is it recently calibrated?

 

[Enchanted Reefs]

A pH of 8.4-8.5 seems to be the acceptable levels for upper limits.

will high ph hurt corals primarily sps?

 

[blaxsun]

will high ph hurt corals primarily sps?

See the above posts re: double-checking the results.

 

[Enchanted Reefs]

How are you measuring pH and if it's with a probe, when was it last calibrated? 8.7 pH is darn near impossible unless you're adding strong bases.

I tested ph with a probe (8.7 ph) and salifert test kit. the salifert test kit only goes up to 8.6 (blue color) but when i tested the water with the salifert kit my sample was dark blue so i assume it's above 8.6

 

[Enchanted Reefs]

let me calibrate my ph probe. Last time was probably about a month ago.

 

[Randy Holmes-Farley Verified Community Expert]

will high ph hurt corals primarily sps?

it may help or hurt. I’d consider pH above 8.6 to be experimental.

 

[Enchanted Reefs]

Re-calibrated the ph probe. It’s currently at 8.64 probably because it goes down at night but I think it will still go up to 8.7 tomorrow.

 

[Enchanted Reefs]

All corals seem good.
I’m going to leave it as is for now and take some pictures of a few corals tomorrow to see how it impacts coral growth.

 

[HudsonReefer2.0]

 

[Randy Holmes-Farley Verified Community Expert]

All corals seem good.
I’m going to leave it as is for now and take some pictures of a few corals tomorrow to see how it impacts coral growth.

Let us know how it works out at that pH.

 

[BanjoBandito]

Hey I am a “higher ph” guy, but good lord man. Ease off the gas pedal. Lol.

 

[mcgullen]

You AOB and NOB can stop working at that PH level.

 

[Enchanted Reefs]

I had to lower it. currently sitting at 8.4.
my wavemakers began to act strange. I took them out to clean them and noticed a good amount of what i believe to be calcium build up.

I'm not entirely sure if this is related to the higher ph though.

 

[Enchanted Reefs]

didn't notice an affect on my SPS they all seem to be doing good and didn't seem to get stressed out.

 

[Randy Holmes-Farley Verified Community Expert]

I had to lower it. currently sitting at 8.4.
my wavemakers began to act strange. I took them out to clean them and noticed a good amount of what i believe to be calcium build up.

I'm not entirely sure if this is related to the higher ph though.

yes, pH is the biggest driver of calcium carbonate precipitation. A 0.3 pH unit increase is equivalent to doubling alk from 7 to 14 dKH or calcium from 420 to 840 ppm.