My Tab water analysis .. Any advise is welcomed - The Planted Tank Forum
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post #1 of 20 (permalink) Old 09-23-2016, 08:55 AM Thread Starter
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My Tab water analysis .. Any advise is welcomed

Hi,

I tested my tab water direct from the faucet and here is the results:
pH : 6.6-6.8
KH : 1.5 d
GH : <3 mg/l
nitrite NO2 : 0.25 mg/l
nitrate NO3 : 10-18 mg/l
CO2 : <14.9
chlorine Cl : 0

I have 300 Litre aquarium with ADA Aquasoil Amazonia. My aquarium has some plants with no fishes. I have a plant to stock it later.
The aquarium has no filtration or airstone

based on the above analysis, Do I need to add prime or have RO/DI system? or Do I need to have a buffer?

Is it safe to pour my tab water directly to the aquarium with a active carbon filtration? Should I circulate the water first?
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post #2 of 20 (permalink) Old 09-23-2016, 09:21 AM
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Have a good top filter with a flow rate of atleast five times your water volume per hour.
Here you can find one http://amzn.to/2cQMSOl
Then use Aquaclay filter media for biological filtration.

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post #3 of 20 (permalink) Old 09-23-2016, 10:17 PM
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Tap water without chlorine? May I ask how you tested it. Also what is the ammonia level in your tap water?

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post #4 of 20 (permalink) Old 09-24-2016, 06:46 AM Thread Starter
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Watercrayfish

direct from the faucet using test strips. Unfortunately I don't have ammonia test
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post #5 of 20 (permalink) Old 09-24-2016, 02:11 PM
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Test strips are notoriously inaccurate. Where are you located?
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post #6 of 20 (permalink) Old 09-25-2016, 01:28 PM Thread Starter
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Quote:
Originally Posted by Kubla View Post
Test strips are notoriously inaccurate. Where are you located?
UAE. Could be Distillation or bowled water.
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post #7 of 20 (permalink) Old 09-25-2016, 02:27 PM
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Its hard to believe there is no chlorine added in a tap water and chlorine is not good for your plants.
For plant only tanks you don't need a filter, but you need mild water circulation which can be achieved by air stone or power heads.

Also to be safe you can store the tap water in some bucket for 24 hours which would gas out the chlorine. Probably you tested a water which was stored somewhere in your household to get that zero chlorine reading. In that case you don't need Prime or any kind of water conditioner.
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post #8 of 20 (permalink) Old 09-25-2016, 02:41 PM
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Chlorine is a very mild disinfectant at the levels used in drinking water. It is normally carefully controlled to a level which will keep the bacteria and disease in the drinking water down to a level that is safe for most people but not strong enough to kill too much of the good bacteria in our digestive track. So how it may work with your plants is an open question. We don't normally find drinking water that is not treated in many of the crowded countries so it would be good to determine what is done in your case. There are places where treatment is not needed but it is not uniform around the world. Knowledge is power so do ask some questions of the local supply.
Fish do need to have the chlorine removed in most cases so some product like Prime is needed if there is chlorine or chloramine present. If it is only chlorine, storing the water for a day or so before use will let the chlorine gas off but testing is needed to figure out what and how long.

Your tests show your water is very soft( not many minerals?) and somewhat acidic. The lack of minerals may be due to the treatment, distilled water? This may tend to make the PH very easy to change and do abrupt changes which fish may not find good. Plants are less prone to harm.
Best of luck with the project!
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post #9 of 20 (permalink) Old 09-25-2016, 03:16 PM
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Being that you're located in the UAE I'm not at all familiar with your tapwater. Do you know what kind of process is used to make or keep your tap water potable? I know there is some desalination done there but not familiar at all with disinfection processes.
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post #10 of 20 (permalink) Old 09-26-2016, 03:32 AM
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Clearly the water suppliers there don't artificially raise the pH of their water to protect the copper and lead in water piping from erosion. Your pH would be considered too low for water in the USA, so it would come out of the tap at something closer to 8pH, then after a day or two the pH would drop down to the lower reading. Given how soft your water is I suspect it is either distilled/ desalinated, or river water. The more you can learn about the source of the water the easier it will be to decide what you should treat it with, if anything.

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post #11 of 20 (permalink) Old 09-26-2016, 04:42 AM
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I think if you can drink the tap water,you can keep plant's/fish in same unless you are altering the water .
Tap water,or potable water is usually pretty consistent.
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post #12 of 20 (permalink) Old 09-26-2016, 01:29 PM
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I also recommend ditching the test strips. Also, consider letting your tap water rest in a shallow Tupperware container and then testing for pH after 24hr and again 48hr.

My tap water comes out at 6.8, with a 3 GH and KH. After 48 hr though it shoots up to 7.8
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post #13 of 20 (permalink) Old 09-26-2016, 09:03 PM Thread Starter
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Quote:
Originally Posted by Kubla View Post
Test strips are notoriously inaccurate. Where are you located?
Quote:
Originally Posted by Watercrayfish View Post
Its hard to believe there is no chlorine added in a tap water and chlorine is not good for your plants.
For plant only tanks you don't need a filter, but you need mild water circulation which can be achieved by air stone or power heads.

Also to be safe you can store the tap water in some bucket for 24 hours which would gas out the chlorine. Probably you tested a water which was stored somewhere in your household to get that zero chlorine reading. In that case you don't need Prime or any kind of water conditioner.
Thanks Watercrayfish for the advice.


The only source of water we have in UAE is the seawater. I can guess it is distilled.

I have 3 plants so far and they are growing but in a very slow pace
Glossostigma Elatinoides
Hydrocotyle tripartita
Echinodorus Tenellus

I don't have CO2 and I have medium light (current satellite led plus pro)
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post #14 of 20 (permalink) Old 09-26-2016, 09:19 PM
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How long the tank is running?
If its a small tank you should setup a DIY CO2, worth the pain. With medium light the tank will be an algae farm, if the photo period is not reduced considerably.
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post #15 of 20 (permalink) Old 09-26-2016, 09:19 PM Thread Starter
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Quote:
Originally Posted by PlantedRich View Post
Chlorine is a very mild disinfectant at the levels used in drinking water. It is normally carefully controlled to a level which will keep the bacteria and disease in the drinking water down to a level that is safe for most people but not strong enough to kill too much of the good bacteria in our digestive track. So how it may work with your plants is an open question. We don't normally find drinking water that is not treated in many of the crowded countries so it would be good to determine what is done in your case. There are places where treatment is not needed but it is not uniform around the world. Knowledge is power so do ask some questions of the local supply.
Fish do need to have the chlorine removed in most cases so some product like Prime is needed if there is chlorine or chloramine present. If it is only chlorine, storing the water for a day or so before use will let the chlorine gas off but testing is needed to figure out what and how long.

Your tests show your water is very soft( not many minerals?) and somewhat acidic. The lack of minerals may be due to the treatment, distilled water? This may tend to make the PH very easy to change and do abrupt changes which fish may not find good. Plants are less prone to harm.
Best of luck with the project!
Good that you mentioned the pH because I have an 15 gallons tank and I suffered from pH fluctuations and losing fish. it was out of control.
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