Question how to get low pH - The Planted Tank Forum
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post #1 of 18 (permalink) Old 03-15-2014, 07:07 PM Thread Starter
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Question how to get low pH

Hi everyone,

I have an ADA malaya aquasoil, water change on peat moss + RO water change, oak and almond leaf.

My problem is the pH dont want down under 5,5...my tank size is 55G

I want a pH between 4 and 5.

Do i need a pH controller or something natural can reach these value ?

Thank
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post #2 of 18 (permalink) Old 03-15-2014, 07:29 PM
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Quote:
Originally Posted by Xenaph View Post
Hi everyone,

I have an ADA malaya aquasoil, water change on peat moss + RO water change, oak and almond leaf.

My problem is the pH dont want down under 5,5...my tank size is 55G

I want a pH between 4 and 5.

Do i need a pH controller or something natural can reach these value ?

Thank
question.. Why???
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post #3 of 18 (permalink) Old 03-15-2014, 07:31 PM Thread Starter
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I want breed nannaraca adoketa, my first spawn egg was eaten all moisture and water need to be under 5 and over 4 to get a free swim.
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post #4 of 18 (permalink) Old 03-15-2014, 07:39 PM
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Store chemicals are a waste of money on this. I don't think peat will bring it down that much.
I use RO water to regulate this. Adding 20% brings it down by 1...from 8 to 6.8 in my tank. I only change water at 20% so it took me 5 water changes for it to level out.
If you do 50% water changes it will take about three water changes.
You must use this formula to change it or you will think it is not workng enough and
add too much the next water change. I don't know what the Ph is from the tap so
I can't suggest a percent to start with. But there is a product that you need to use with it if you do more than 40% RO water. Ask what is is on the invert section.
But all RO water has no minerals and they need to be added back for fish/shrimp.
But if you are only using fish that live in 4 PH then you might not need it.
You will nee to check this with people who have those fish in the fish section.

The shortest distance between any two points is a straight line...in the opposite direction...
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post #5 of 18 (permalink) Old 03-16-2014, 12:35 AM
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You can do 100% RO and it won't get you down that low. RO water is usually neutral or pretty close. Mine usually rest at 6.8. You may be able to take 100% and lower with a ph down product, but not sure if they will get you that low. You would also need to re-mineralize or add a gh booster type product. A ph of 6 should be easy.

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post #6 of 18 (permalink) Old 03-16-2014, 01:41 AM
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Do creatures, other than bacteria, actually live in water that low in pH? It is really low!! Low enough that some of the things we count on in aquariums might not act normally, like nitrifying bacteria, for example.

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post #7 of 18 (permalink) Old 03-16-2014, 03:05 AM
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I want breed nannaraca adoketa, my first spawn egg was eaten all moisture and water need to be under 5 and over 4 to get a free swim.
Add vinegar or coffee.........

Coffee has a pH of about 5..
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post #8 of 18 (permalink) Old 03-16-2014, 06:42 AM
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I would use pure RO.
Pinch of GH booster (GH 1 degree or less). Just enough to meet the mineral needs of the fish.
zero degrees of KH. No carbonates. Does your substrate remove KH?
Filter through peat, oak leaves, alder cones, Indian Almond or similar materials.
Decor in the tank: Driftwood, fallen leaves.
Substrate: Peat moss.
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post #9 of 18 (permalink) Old 03-16-2014, 11:44 AM Thread Starter
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Thank everyone for answer.

My tap water is 7, kh and gh very very soft. I have replenish stuff to use with RO.

The peat moss, i used it for my water change 1 bucket of 7G + 1 bucket of 5G of RO water but the water dont drop under 5,5.

Peat Moss of substrate ? How, because it float...
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post #10 of 18 (permalink) Old 03-16-2014, 12:13 PM
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Adding vinegar seems to be the cheapest, safest, and most controlled / repeatable way to get that low.

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post #11 of 18 (permalink) Old 03-16-2014, 12:23 PM Thread Starter
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Vinegar in aquarium ? At 100$ for two fish i dont want do something wrong.

Ph controller with injection CO2 is safe for this pH?
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post #12 of 18 (permalink) Old 03-16-2014, 12:39 PM
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Been a while since I used a controller but most will only get you to 5.5. Don't think that is the way you want to get that low anyway.

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post #13 of 18 (permalink) Old 03-16-2014, 01:46 PM
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Before you get to 5 with co2, the 2 $100 fish will be long dead.

Low pH is acid. That's just science. Can't change it, can't ignore it, can't get away from it.

If you want acid, you use acid. I do not know of any other way.

What that does to your fish, your tank, your bacteria is another matter.

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post #14 of 18 (permalink) Old 03-16-2014, 02:06 PM
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Vinegar in aquarium ? At 100$ for two fish i dont want do something wrong.

Ph controller with injection CO2 is safe for this pH?

Go back to basics.. see why:
Quote:
Freshwater habitats

Low gradient rivers and streams run through sedimentary soils formed mainly by podsols subjected to seasonal flooding. The Rio Negro’s water is extremely poor in mineral content, with conductivity as low as 8 ÁS, and is extremely acidic, with pH’s ranging from 2.9 to 4.2. The largest blackwater river in the world,
Quote:
While the name Rio Negro means Black River, its waters aren't exactly black; they are similar in color to strong tea. The dark color comes from humic acid from incomplete breakdown of phenol-containing vegetation from sandy clearings.
I know what I'd do.. I'd write to this person, or do an extensive research search..
since it is his "job" to study acid loving fish.. he should know how to keep them.. you would think..
http://home.sandiego.edu/~gonzalez/i...s/Page542.html



Contact:

Shiley Center for Science & Technology Building, Rm 483

Phone: 619.260.4077

Fax: 619.260.6804

E-mail: [email protected]


my gut instinct was to use Humic acid.. butt oddly that seems to increase pH... thus finding an expert..
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post #15 of 18 (permalink) Old 03-16-2014, 04:13 PM
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http://www.acuteangling.com/Blackwat...tolerance.html

Here they used sulfuric acid.........

THAT said.. keep this in mind;
Quote:
The pH tolerance experiment of this study, using natural blackwater and natural freshwater demonstrates that fishes' ability to tolerate low pH and survive longer, is significantly increased in blackwater and is consistent with the cited studies. Similarly, experimentation with a variety of Rio Negro species by Gonzalez (2002), Wood et al (2003) and Wilson (1999), all of whom examined Na+ influx and efflux in the presence of low pH, has shown that these processes were less affected in natural blackwater than in an artificially prepared medium made with distilled water and added equal ion concentrations, but no DOM (used as an equivalent to natural freshwater).
My take.. using RO water and acidifying it is a bad idea in comparison to using natural "acid" water w/ "dissolved organic matter" component.... Your in Canada right?
Go collect some bog water...

Last edited by jeffkrol; 03-16-2014 at 04:39 PM. Reason: boggy
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