Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater Reef Aquaria
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 07-18-2014, 05:38 PM   #21
Aquarium Advice Addict
 
jeffaquarius's Avatar
 
Join Date: Jan 2013
Location: Los Angeles, California
Posts: 1,933
The pH which is the power of Hydrogen is a value that indicates the level of oxygen in the water. It is the result of splitting H2O (water). The higher the hydrogen the more oxygen in the tank. I would prefer to maintain my tank with more oxygen.
__________________

__________________
"Nothing great in the world has ever been accomplished without passion". George Wilhelm Friedrich Hegel

http://www.youtube.com/watch?v=90w86...A434PW3gEa1-QA
jeffaquarius is offline   Reply With Quote
Old 07-18-2014, 05:45 PM   #22
Aquarium Advice Addict
 
bribo12's Avatar

Tank of the Month Award
 
Join Date: Sep 2013
Location: Maryland
Posts: 9,117
Ro / Di and pH

Quote:
Originally Posted by jeffaquarius View Post
The pH which is the power of Hydrogen is a value that indicates the level of oxygen in the water. It is the result of splitting H2O (water). The higher the hydrogen the more oxygen in the tank. I would prefer to maintain my tank with more oxygen.
pH is a measure of the acidity or basicity of a solution. It has nothing to do with oxygen. pH measures the activity of hydrogen in a solution

Edit: pH does influence oxygen but does not indicate oxygen levels. A lot of factors influence dissolved oxygen though. There's a whole lot of chemistry behind it

Sent from my iPhone using Aquarium Advice
__________________

__________________
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
bribo12 is offline   Reply With Quote
Old 07-18-2014, 06:20 PM   #23
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,320
Ro / Di and pH

Okay, if you want to get perfectly accurate;

pH is a measure of the hydorgen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH. This may seem like a confusion way to express these reationships, and it is, until you understand what pH stands for. The equation that defines pH is given as follows:

pH=-log[H+] concentration,

which is read:

the pH is equal to minus the log of the H+ concentration.

For example is the H+ concentration is very low, lets say about 0.0000001M, then the pH is

pH= -log[.0000001] whis is the same as -log[1 X 10-7]

the term log[1 X 10-7] = -7

- (-7) = 7

You add salt and it's mineralization and the equation gets even more complicated. It comes down to ionic balances.




Sent from my iPhone using Aquarium Advice
__________________
Gregcoyote is offline   Reply With Quote
Old 07-18-2014, 06:24 PM   #24
Aquarium Advice Addict
 
bribo12's Avatar

Tank of the Month Award
 
Join Date: Sep 2013
Location: Maryland
Posts: 9,117
Yay math and chemistry! Woo


Sent from my iPhone using Aquarium Advice
__________________
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
bribo12 is offline   Reply With Quote
Old 07-18-2014, 06:51 PM   #25
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,320
Ro / Di and pH

I'm a engineer. Sorry.

C02 concentration in your home can really effect pH. When my windows are open I steady out at 8.4, when air conditioning is on I average 8.0-8.2.


Sent from my iPhone using Aquarium Advice
__________________
Gregcoyote is offline   Reply With Quote
Old 07-18-2014, 06:55 PM   #26
Aquarium Advice Addict
 
bribo12's Avatar

Tank of the Month Award
 
Join Date: Sep 2013
Location: Maryland
Posts: 9,117
Quote:
Originally Posted by Gregcoyote View Post
I'm a engineer. Sorry.


Sent from my iPhone using Aquarium Advice
Haha no I understand it for the most part. Thanks for laying it out like that.


Sent from my iPhone using Aquarium Advice
__________________
20 Gallon SPS reef
29 Gallon FW "fat catfish" tank
20 Gallon Long Dart Frogs "Zig" and "Zag"
bribo12 is offline   Reply With Quote
Old 07-18-2014, 07:07 PM   #27
Aquarium Advice Addict
 
jeffaquarius's Avatar
 
Join Date: Jan 2013
Location: Los Angeles, California
Posts: 1,933
Can you translate that in layman's language? Explain why pH increases when oxygen is high with water surface agitation?
__________________
"Nothing great in the world has ever been accomplished without passion". George Wilhelm Friedrich Hegel

http://www.youtube.com/watch?v=90w86...A434PW3gEa1-QA
jeffaquarius is offline   Reply With Quote
Old 07-18-2014, 07:29 PM   #28
Aquarium Advice Addict
 
jeffaquarius's Avatar
 
Join Date: Jan 2013
Location: Los Angeles, California
Posts: 1,933
Do you agree that lower value of pH (less Hydrogen) or dKH means more acidic?
__________________
"Nothing great in the world has ever been accomplished without passion". George Wilhelm Friedrich Hegel

http://www.youtube.com/watch?v=90w86...A434PW3gEa1-QA
jeffaquarius is offline   Reply With Quote
Old 07-18-2014, 07:34 PM   #29
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,320
Ro / Di and pH

Quote:
Originally Posted by jeffaquarius View Post
Can you translate that in layman's language? Explain why pH increases when oxygen is high with water surface agitation?

It's more about lowering C02 concentration in the water. Dissolved C02 lowers pH. When atmospheric C02 is low, then so is the tanks C02 as it balances thru gas exchange at the surface (or skimmers). A sealed up tank or house raises C02 levels, a lot. That's why we recommend open tops that can breath. It's as much about C02, or more, than it is oxygen levels.

Oxygen is usually measured by redox potential (ORP), which indicates not so much how much oxygen is available, but the reduction or oxidizing potential of the tank water (which requires O2). As biological process's depend on these oxidizing potentials, a high value is preferable.


Sent from my iPad using Aquarium Advice
__________________
Gregcoyote is offline   Reply With Quote
Old 07-18-2014, 07:36 PM   #30
Aquarium Advice Addict
 
Gregcoyote's Avatar



Tank of the Month Award
 
Join Date: Feb 2011
Location: Columbia, Missouri
Posts: 8,320
Ro / Di and pH

Quote:
Originally Posted by jeffaquarius View Post
Do you after that lower value of pH (less Hydrogen) or dKH means more acidic?

dKH is the hardness of the water, it's control over pH is that a high dKH level can "buffer" the pH and restrict it's range. Here the chemistry gets a bit more complex as magnesium levels also have a role in ionic balancing the tank water. But IMO, acidity is controlled by tank age, feeding and how much detritus is breaking down and/or C02 concentrations in the water.

A low dKH can be dangerous in many ways, one is it can allow pH to accidentally drop too low. Rarely does it go too high. The chemists can take it from here.

Sent from my iPad using Aquarium Advice
__________________

__________________
Gregcoyote is offline   Reply With Quote
Reply

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Flourite... I rinse and rinse and rinse and... Thaiboxer Freshwater & Brackish - Planted Tanks 2 10-02-2006 11:19 PM
Overflow level up and down and up and down (plus gurgling) luckycat Saltwater Reef Aquaria 4 05-20-2005 11:10 AM
Ciclids and Danios and Tetras and Hatchetfish Danio35 Cichlid Discussion 15 01-19-2005 08:30 PM
Got some snails and Crabd and here ar4e some results oh and hotskate Saltwater Fish Only & FOWLR 20 11-01-2003 01:26 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 11:10 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.