Barrs GH Booster and KH - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 01-25-2013, 09:08 PM Thread Starter
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Barrs GH Booster and KH

Barrs GH Booster raises GH, but I guess it also raises KH? By how much?

The description on aquariumfertilizer only states : "One Tablespoon or 16 grams will raise the GH of 20 gallons of water by 3 degrees"
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post #2 of 4 (permalink) Old 01-26-2013, 02:12 AM
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Does not raise KH.
Has no carbonates or bicarbonates.

If you want to raise the KH, baking soda has bicarbonates.
If you do not want to add the sodium, then potassium bicarbonate is available as some sort of food product.
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post #3 of 4 (permalink) Old 01-26-2013, 03:13 AM Thread Starter
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I think only KH acts as buffer for pH?
Can my pH be stable even without KH?

My goal is to eventually get discus, so I will aim for what will be the best conditions for them.
Everything will be automated, so it's only a questions of finding the recipe that works best. I can use either tap or RO water, but not a mix.

I plan to go with RO water, I already have the unit, I think it will be easier to control and it allows me to get better water parameters for discus.
I will dose EI, use CO2, and have daily water changes (probably 10%).

So, will GH Booster be sufficient, or do I need to add something else and raise KH?
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post #4 of 4 (permalink) Old 05-01-2013, 09:36 AM
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Maybe you already got your answers at this point, but I will try to help just in case.

Quote:
Originally Posted by Cthulhu View Post
I think only KH acts as buffer for pH?
Yes.

Quote:
Originally Posted by Cthulhu View Post
Can my pH be stable even without KH?
Short answer: no.

Long answer: it depends. Even with very low KH your PH will be stable unless something else (for example CO2 injection) changes it. And it will change faster with low buffer.

Useful answer: PH change doesn't really matter when it's due to CO2. Fish doesn't care, why should you.

Quote:
Originally Posted by Cthulhu View Post
Everything will be automated, so it's only a questions of finding the recipe that works best. I can use either tap or RO water, but not a mix.
Why can't you automatically mix tap with RO water ?

Quote:
Originally Posted by Cthulhu View Post
So, will GH Booster be sufficient, or do I need to add something else and raise KH?
From what I have learned in these forums, there are only two reasons someone should care about KH:
  1. To ensure a KH >=1 so we can use the KH-CO2 table.
  2. To ensure a KH range optimal to the fish you are raising.
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