Chloramine Level In Singapore?, Treating tap water containing chlorine / chloramine Options

[goldrush]

sry guys for bringing up dis thread again. bt den again, i wna be sure of whut im doing. gna start keeping goldfishes again after a break of a few yrs and not really sure abt the changing water part.

hmm, ive got 2 questions here.

1) does it make a difference whether to take water from tap(the one we drink from) or the toilet tap/sink?

2) say i add the water to my new tank and add the anti chroline thingie to the tank already. and den the nx week, i wna do a partial 50% change, i just add the anti chlorine to the new water that im adding in ryt? and is it harmful if theres too much anti chlroine in the tank? cus if u guys nawmean, after adding the new water(with the anti chlorine), it is sure to mix with the old water in the tank and the anti chlorine content is sure to rise.

haha tt was the best way i could post my queires. hope to get answers as fast as possible guys. ((: appreicate the help.

For a start please DO NOT USE SMS LANGUAGE......It really irks on reading

Answer to question 1) no difference.............Unless someone just did his/her business and you need to change in the midst of pungent and obnoxious gas

Answer to question 2....No harm in overdosaging unless you pour the entire bottle

[Rooney10]

haha. okok thanks for your help goldrush. will go a long way and appreciate your effort in replying. (: till next time.

[The Matrix]

check your piping. If your house only got a single water piping from the PUB, then not a problem. If you are staying in some places where uses industrial water, then be careful which tap to use. I am not too sure any estates still using duo-piping system.

anti-chlorine is best not to exceed 3 times the recommeded dosage. Unless u are using high chlorinated water. If you regularly smell chlorine from your tap, best that you do a test and get a proper dosage for your household source.

[CP]

. I am not too sure any estates still using duo-piping system.

As far as I know, residential estates has never used a duo piping system.All water supply to residential are potable water.

[lnicky]

Sorry I am a newbie but how quick does the water conditioner de-chlorinate the water? I usually wait for 1-2 hours before transferring the new water to the tank. Is this enough?

This post has been edited by CP: Sat, 15 Dec 2007 4:49 pm
Reason: Posts shifted

[bekko]

Sodium thiosulfate (dechlor) reacts almost immediately. As soon as the crystals are dissolved and the water is mixed, the job is done. In addition to using dechlor, aerating the tap water for an hour or two before exposing the fish to it is always benificial. It helps equalize the temperature, drives off excess carbon dioxide, saturates oxygen, etc.

-steve

[Kinder]

Hi Nicky,

Dont know what dechlorinate your using....but i suggest you use a liquid one than powdered ones...i believe it works more rapid.

I use Seachem's Prime...its concentrated and does 200ltr in 5ml. And more so dams here in Aus are at low levels...there could be more heavy chemicals in the tap water. I personally feel seachem prime is doing a good job for me...i used seachem powdered de-chlor ....and had trouble with my fishes after water change ...not so anymore.

i give 10-20mins....time and then run my canister filter, and then wait till 40-60mins before i start putting my fish back in the tank....this 40-60mins give my canister filter time to suck in any floating debris . (very important that you aerate your tank....i do that rite after i put my dechlor )

kinder

OH if any bros good at Chemistry....

Seachem Prime...says it detoxifies nitrite and nitrate,
do anyone know to what nitrate&nitrite changed to...?

This post has been edited by Kinder: Sat, 15 Dec 2007 2:05 pm

[CyberET]

it works very quickly.

its also better to run your canister asap, as static water loses oxygen very quickly, and your bb dies

[goldrush]

It has been universally accepted by most that sodium thiosulphate is a very safe additive to use to neutralise chlorine.Infact up to 100ppm added may not cause any visible detrimental effect.But a word of caution here.Na2SO3 per se may not have direct harm to fish however if the excess thiosulphate(not use to mop up the free Chlorine) is allowed to decompose in the presence of oxygen then a harmful by product may surface which may kill your fish.........

Initial reaction in the presenceof Chlorine,the aqueos thiosulphate comprises of the following outcome


Na2S2O3 + Cl2 + H2O >>>>> Na2SO4 + S + 2HCl

However if Chlorine is absent,and especially in alkaline condition(our goldfish pH condition),the following may occur


Na2S2O3 + H2O>>>>>>> Na2SO4 + H2S

HYDROGEN SULPHIDE IS VERY TOXIC TO ALL FISHES

So it is true that sodium thiosulphate is very safe for your fishes and probaby will not kill your fishes but instead we have forgotten the decomposition product that did kill them.

I tend to use crystals for that matter to neutralise the free chlorine as stock solution(due to limited shelf life)may have decomposed to harmful products which we may not be awared.Commercial products with chelating agents added may retard or neutralise any decomposition could be a safer bet for the uninitiated.

2 crystals for every 60ml is my recommended dose


Some chemistry lesson on a Sunday?????

[CP]

2 crystals for every 60ml is my recommended dose

I no understand.
2 crystals for every 60ml OF WHAT???? Tank water, or typo (not hypo) error?

This is the first time that I have come across any figures for dosage or overdosing of hypo.A previous discussion here on overdosing but yielded no figures as well:
http://www.rafflesgold.com/forums/index.ph...ic=2185&hl=

[CP]

A little correction to my post above.Matrix did previously mentioned of a dosage of 1.5g for 100l of water.

How much to use har ... for 100L, just a small 1.5 gram will do more than enough. Already overdose liao. For our local water hor.

[goldrush]

I no understand.
2 crystals for every 60ml OF WHAT???? Tank water, or typo (not hypo) error?

This is the first time that I have come across any figures for dosage or overdosing of hypo.A previous discussion here on overdosing but yielded no figures as well:
http://www.rafflesgold.com/forums/index.ph...ic=2185&hl=

In our local context I use 2 crystals for every 60 ml of new water(tap water) added

[CP]

I think you got hypo typo error.Do you mean 60 litres of water NOT 60ml.

[goldrush]

you are right it should be 60 litres and not 60 mls