Carbon dosing reduces Alk

potatocouch

Well-Known Member
View Badges
Joined
Feb 16, 2016
Messages
526
Reaction score
177
Review score
+0 /0 /-0
This what I've experienced and some folks too who carbon dose, be that NoPox or Vinegar or Vodka.

I can't remember what was the explanation for this.

If I recall correctly it is definitely not due to corals uptake, nor precipitation.

How does Carbon reduces Alkalinity?
 
Click to watch best scape method in 5 easy steps!

Brian Treadwell

Active Member
View Badges
Joined
Jun 4, 2016
Messages
173
Reaction score
86
Review score
+0 /0 /-0
Location
Conroe , Texas
I Carbon dosed vodka and vinegar to lower No3 and Po4 but it never lowered my dkh , but from my understanding when Carbon dosing due to lower nutrients you should get your dkh lower , I have stop the carbon and my dkh is the same as when I dosed carbon , I had to dose Alk. And Ca then and still do.
 

Myka

Valuable Member
View Badges
Joined
Jul 16, 2015
Messages
1,041
Reaction score
672
Review score
+0 /0 /-0
Location
SK, Canada
Alkalinity is used in nitrification, that same alkalinity is released during denitrification. It is not usually enough to really notice.

You can read about it here: www.reefkeeping.com/issues/2004-12/rhf/

It could be that when people lower nutrients the corals start growing more so the uptake of alkalinty is increased. Maybe that's what they were referring to without knowing what was going on?
 
Last edited:
OP
potatocouch

potatocouch

Well-Known Member
View Badges
Joined
Feb 16, 2016
Messages
526
Reaction score
177
Review score
+0 /0 /-0
Alkalinity is used in nitrification, that same alkalinity is released during denitrification. It is not usually enough to really notice.

You can read about it here: www.reefkeeping.com/issues/2004-12/rhf/

It could be that when people lower nutrients the corals start growing more so the uptake of alkalinty is increased. Maybe that's what they were referring to without knowing what was going on?

I skimmed (read) through it and noticed the No3 export was via WC and not Carbon dosed (skimmed out) so not sure if it's apple-to-apple comparison.

Unless I've missed out on things (apology), the question stands as to why Carbon dosing depletes Alk? It could be the Coralline that takes it but I'm noticing no precipitation and Ca hardly depletes and Mg is staying put as 1,500.
 
Top Shelf Aquatics

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
45,418
Reaction score
34,465
Review score
+0 /0 /-0
Location
Arlington, Massachusetts, United States
This what I've experienced and some folks too who carbon dose, be that NoPox or Vinegar or Vodka.

I can't remember what was the explanation for this.

If I recall correctly it is definitely not due to corals uptake, nor precipitation.

How does Carbon reduces Alkalinity?

It doesn't.

It might alter the growth rate of corals, or reduce the pH, both of which alter the demand for alkalinity.
 

Randy Holmes-Farley

Reef Chemist
View Badges
Joined
Sep 5, 2014
Messages
45,418
Reaction score
34,465
Review score
+0 /0 /-0
Location
Arlington, Massachusetts, United States
Interested to see what others say because I always thought the breakdown of Nitrate would increase Alk.

It does, but the production of that nitrate depletes alk by the same amount (which was noted above). ;)
 

Myka

Valuable Member
View Badges
Joined
Jul 16, 2015
Messages
1,041
Reaction score
672
Review score
+0 /0 /-0
Location
SK, Canada
I skimmed (read) through it and noticed the No3 export was via WC and not Carbon dosed (skimmed out) so not sure if it's apple-to-apple comparison.

Sorry, I thought you would read between the lines. Back when Randy wrote that article, carbon dosing wasn't a "household term".


You're welcome too. :) (hehehehe)
 
Last edited:
Fritz
OP
potatocouch

potatocouch

Well-Known Member
View Badges
Joined
Feb 16, 2016
Messages
526
Reaction score
177
Review score
+0 /0 /-0
Sorry, I thought you would read between the lines. Back when Randy wrote that article, carbon dosing wasn't a "household term".



You're welcome too. :) (hehehehe)

ThankYou.jpg


:D:D:D:D:D
 

How long does it take to you to get an inch of acropora growth? (on average)

  • A couple of weeks or less

    Votes: 4 1.6%
  • Up to 1 month

    Votes: 14 5.6%
  • Up to 2 months

    Votes: 24 9.6%
  • Up to 3 months

    Votes: 46 18.4%
  • Up to 6 months

    Votes: 55 22.0%
  • Up to 12 months

    Votes: 18 7.2%
  • 12+ Months

    Votes: 9 3.6%
  • I can't grow acropora

    Votes: 70 28.0%
  • Other (please explain)

    Votes: 10 4.0%
Santa Monica Filtration
Top