pH range

Javierati

Community Member
Review score
+0 /0 /-0
View Badges
Joined
May 7, 2021
Messages
40
Reaction score
11
Review score
+0 /0 /-0
Location
Dorado
I have a pH question.

I was running at 7.95 to 8.1 pH

I have a Nyos 300 with two air intakes. Thinking that CO2 is one of the main drivers of low pH I bought (2) CO2 scrubbers and connected it to the protein skimmer.

pH went from 8 to (8.3-8.42) range.

when I disconnect 1 of the CO2 scrubbers, my range becomes 8.15-8.25

What is best?
8.15-8.25 range
Vs
8.3-8.45
 
Maxout

Randy Holmes-Farley

Reef Chemist
Review score
+0 /0 /-0
View Badges
Joined
Sep 5, 2014
Messages
46,514
Reaction score
35,930
Review score
+0 /0 /-0
Location
Arlington, Massachusetts, United States
Best implies an opinion, and begs the question "What criteria?".

Higher pH is expected to lead to faster growth of some hard corals, given other conditions are not limiting growth.

Higher pH can also lead to more precipitation of calcium carbonate on pumps, etc.

The pH range of a typical reef tank is generally Ok from 7.8 to 8.55. Outside that range, issue become more concerning.

What is "perfect?". Depends on your goals.

I ran my tank at 8.30 to 8.55 for years and though that was fine.
 
OP
Javierati

Javierati

Community Member
Review score
+0 /0 /-0
View Badges
Joined
May 7, 2021
Messages
40
Reaction score
11
Review score
+0 /0 /-0
Location
Dorado
Best implies an opinion, and begs the question "What criteria?".

Higher pH is expected to lead to faster growth of some hard corals, given other conditions are not limiting growth.

Higher pH can also lead to more precipitation of calcium carbonate on pumps, etc.

The pH range of a typical reef tank is generally Ok from 7.8 to 8.55. Outside that range, issue become more concerning.

What is "perfect?". Depends on your goals.

I ran my tank at 8.30 to 8.55 for years and though that was fine.
Thank you
I’ve read to aim at 8.3, but once I got there, the pH kept rising a bit to 8.4-8.42 and I got concerned it could be harmful to run the aquarium at those levels.

your post gives me reassurance that 8.3-8.4 pH is ok.
 

PeterC99

Can’t Remember What I Did Before Reefing?
Review score
+1 /0 /-0
View Badges
Joined
Aug 28, 2020
Messages
3,613
Reaction score
15,090
Review score
+1 /0 /-0
Location
White Plains, NY
You will find that your corals will grow significantly faster with the higher pH. Randy is right about precipitation - I was dosing 2 part and got quite a bit of precipitation with the higher pH. Switched to a calcium reactor which does slightly lower your pH. Found nice balance between higher pH (mine tops out now at 8.35) with using calcium reactor and CO2 scrubber.
 
Last edited:
Orphek OR3 reef aquarium LED lighting

Randy Holmes-Farley

Reef Chemist
Review score
+0 /0 /-0
View Badges
Joined
Sep 5, 2014
Messages
46,514
Reaction score
35,930
Review score
+0 /0 /-0
Location
Arlington, Massachusetts, United States
how does one get their PH to stabilize at 8.2-8.3? My PH seems to like staying at 7.8-8.0. I'd like to raise it a bit to 8.2 but not sure if I need to use a PH buffer or not

This thread has a similar discussion

 

Reef Jockey

Active Member
Review score
+0 /0 /-0
View Badges
Joined
Jun 20, 2021
Messages
190
Reaction score
149
Review score
+0 /0 /-0
Location
Under the sea
This thread has a similar discussion

Thanks Randy
 

Toys For Kids Drive

Untitled-2 copy.jpg

Have you ever had a nano reef tank?

  • I have one now (leave a photo in the thread)

    Votes: 168 48.1%
  • Yes, but in the past

    Votes: 76 21.8%
  • No and no plans to have one

    Votes: 54 15.5%
  • No but I want to have one in the future

    Votes: 45 12.9%
  • Other

    Votes: 6 1.7%
AAF
Top