is API Proper PH 6.5 safe?

j1a7y

Junior Poster
Jun 12, 2009
8
0
1
Sacramento
is it safe to use for planted tanks? the bottle says not to use it with live plants. i wanted to put discus in my tank and i believe they need a ph of 6.5.
any idea? thanks
 

fjf888

Guru Class Expert
Oct 29, 2007
294
0
16
Northern Virginia
All these products in most cases are a complete waste of energy and money and potentially cause a lot more harm than help. Most fish, including discus will acclimate to the natural pH of your water. The most important thing to do is frequent partial water changes, especially with discus.

I am not a scientist, but I believe based on what we know now pH is not as important as the hobby once thought it was. Keeping your ammonia and nitrites at zero, maintaining your water quality that is what is important to fish and plants.
 

j1a7y

Junior Poster
Jun 12, 2009
8
0
1
Sacramento
thanks fred, but id like to know if anybody has any experience with this (since ive already bought and opened it). would it be useless to use or if i do use it would it harm my plants in any way?
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
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Do not use it in planted tanks, any pH adjusters of any sort.
The main issue is KH for discus or any fish.

Since we add CO2, which changes the pH, but not the TDS/salt, or KH, this influences, pH, however, it does not affect osmoregulation of salts, which is really what fish "prefer", KH is the salt that adjust pH mostly(in most freshwater systems), so that's the one to focus on, not pH which is an indirect parameter that can be influenced by many things.

If you live in Sac, you likely have good water, low KH, American River sierra snow melt, which is about as good as it comes, low KH, high purity etc.

No need to do anything for discus other than water changes with the tap, add dechlor and that's all.

If you want plants and want to add CO2, then pH becomes irrelevant for the most part other than a gauge to measure CO2.

The KH of my tap water is about 1.2 degrees or about 20ppm.
I live in Sac.

Regards,
Tom Barr
 

j1a7y

Junior Poster
Jun 12, 2009
8
0
1
Sacramento
Thanks Tom!
That answers a lot of my questions. Yes I live in sacramento. I might start looking around for some discus and see if Ill be successful with them.
If you dont mind me asking, how does ph measure co2? im new.
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
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pH and KH will yield a CO2 ppm.

See here:

The following table is from a finnish aquaria magazine (Akvaariomaailma 1992)

The relationship of CO2 , pH and KH

-----------------------------------------------------------------------
\ pH | 6.0 6.2 6.4 6.6 6.8 7.0 7.2 7.4 8.0
KH\ |
-----------------------------------------------------------------------
0.5 | 15 9.3 5.9 3.7 2.4 1.5 0.9 0.6 0.2
1.0 | 30 19 12 7 5 3 1.9 1.2 0.3
1.5 | 44 28 18 11 7 4 2.8 1.8 0.4
2.0 | 59 37 24 15 9 6 4 2.4 0.6
2.5 | 73 46 30 19 12 7 5 3 0.7
3.0 | 87 56 35 22 14 9 6 4 0.9
3.5 | 103 65 41 26 16 10 7 4 1.0
4.0 | 118 75 47 30 19 12 6 5 1.2
5.0 | 147 93 59 37 23 15 9 6 1.5
6.0 | 177 112 71 45 28 18 11 7 1.8
8.0 | 240 149 94 59 37 24 15 9 2.4
10 | 300 186 118 74 47 30 19 12 3
15 | 440 280 176 111 70 44 28 18 4
-----------------------------------------------------------------------
| CO2 milligrams/liter
---------------------------------------------------------------------------



Old school:
Re: CO2-Kh-PH table: Reference Wanted

This assumes the KH is only carbonates, no other KH involved.
Which is not always the case...........

If you want to add CO2 and get more ppms. add more CO2, you do not get more ppm of CO2 by adding pH reducers and keeping the same KH,

To get more CO2, you must add more CO2, it's more simple thatn many seem to think, some think they can manipulate the pH to get more CO2 without CO2.........which is crazy talk:p

You might join SAPS and SAS, the local groups

Regards,
Tom Barr

Regards,
Tom Barr