Ever wonder what is the chloramine level in Singapore?I have heard our water now contains both Chlorine as well as chloramines.(from cp of course).So if bros here use water conditioner,containing NaHSo3 (hypo) to rid off Cl he has only solve half the problem.To begin with,please read the labels carefully that your conditioner must rid your in coming water of both CL as wll as chloramines.If any bros here know the level of chloramines here, will be much appreciated if you can share its value as its significance will be highlighted below.
First we must regard any level of Ammonia as intolerable in any system as it will bring irreversible damages to gills,etc.
Now we all know that Chloramine is a combination of Chlorine and ammonia. One of the differences between Chlorine and Chloramines is the length of effectiveness in the water. With Chlorine it is 48 Hours, with Chloramines it's up to 20 odd Days. Gone are the days when you could aerate the water for 24 hours and dissipate it if chloramines are added.It takes another week or so for Ammonia to dissipate completely if you intend not to use any conditioners.Now using Sodium Thiosulphate, or any of the commercial de-chlorinators in Chloramine treated water, leaves behind a small amount of Ammonia. That's why you need to use something (chemical or mineral) to rid of it when using treated (tap) water.
Things that can remove your residual Ammonia
1) Activated Carbon which is expensive and non rechargeable,non specific in its adsorption.
2) One of those commercial preparation,eg Ammonia binding products(Amquel)
3)Zeolite (rocks and powder) is used for Ammonia removal as well as for controlling PH. However the downside to Zeolite is that you're not able to use salt for treating bacteria/parasites because salt will re-release the ammonia from the Zeolite rocks. Then it has to be regenerated after a certain period of time which requires removing the zeolite.
Footnote on Zeolites
Zeolite will adsorb Ammonia immediately when added to the water if no salt is present. It can be recharged by a 3% Salt solution.
How Much to Use
1 gram of Zeolite will remove 1.5milligrams of ammonia from a liter of water. Take an Ammonia reading of your pond in PPM (parts per million). Divide by 1.5. Multiply by the numbers of Liters in your pond (3.78 Liters = 1 Gallon). The final volume is the number of grams needed to treat your pond (1 level teaspoon of Zeolite equals 6 Grams).
Recharging Zeolite
You can also recharge Zeolite to about 78% of it's normal adsorption rate by soaking it in a salt water solution (1lb. of salt to 3 gals. of Water) for 9 hours or more. Remember to rinse the Zeolite before returning to tank
Now comes the problem
Unless you do a 50% or more water change, this small amount of residual Ammonia is not harmful and will be consumed by your bio filter rather quickly(but bear in mind most of us are using limited filtration system…sponge filter) But let me hypothetically show you its danger should you not know its significance
Assume you are doing a 20% water change and there is 2 PPM chloramine in the water. 2 PPM chloramine neutralized with sodium thiosulfate becomes 0.4 (20% water exchange) multiply by 17/51.5 (molecular weight of ammonia divided by molecular weight chloramine) = 0.132ppm of NH3 being released
0.4X 17 = 0.132
51.5
But if you do 100 % water change and there is a huge 5 PPM chloramine concentration in the makeup water.then we would end up with
5X 17 = 1.65 ppm of NH3
51.5
The 5ppm chloramine reaction with sodium thiosulfate gets to yield approximately 1.65 PPM of Ammonia and that’s a real big problem !
So bros beware of this danger despite I have deliberately hypothesized the situation.So till we can be sure of a concrete level of Chloramine(which I suspect should be around 2ppm) being disclosed,a partial water changes is highly recommended if no conditioner is added and 100% change only if you have added a “relevant” conditioner or else utilizing 1 week old,aged water
This article serves as a supplement to the one I wrote on water changes with special thanks to ranchu8 for his input on CL/Chloramine queries ,our RG water connoisseur jHansolo for his technical advice and expertise,cp for his participation in every single thread for wat ever reasons and of course the Matrix for his continual sparring in a very positive way.
So read the above before you reach for your TAP ,you may be adding a problem or two without realizing it……….
Adding to your Mondays blue
goldrush