Chlorine in in the tank...help

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mzhantsche

Feeder Fish
MFK Member
Nov 3, 2010
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I set up a 24/7 water change RO/DI unit. I replaced new sedimate, two things of carbon, and DI resin. When i installed it i did not have a chlorine/chloramine test. I figured since i put brand new carbon cartridge in that it would take care of the chlorine/chloramine.

That was three months ago. I just purchased a chlorine/chloramine test and test my water. The water coming directly in from the RO/DI unit tested positive for chlorine or chloramine.

I am so freaked out. I don’t know how long the carbon filters stopped working. All the fish seem fine.

So my questions are:

Has anyone ever had chlorine or chloramine leak in the tank and have everything be ok?

I’ve herd that the water has to be passing through the carbon filters slowly for it to be very effective. If that’s the case i need to slow down my flo rate. Its hooked up to a hose line so controlling the flow is very difficult.

Is there anything that people with RO units use to slow down the flow rate?
Im going to test the water directly from the tank to see if their is chlorine in the tank ( im sure their will be).
Thanks everyone.
 
When I do water changes I rarely add stuff to get rid of chlorine. If the fish seam fine then I wouldn't worry, but I would prolly get the chlorine out. Simple way to do that is just some chlorine out stuff.

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Carbon filters have pretty short lifespans and can actually start to leach back into the water. You might want to use an inline doser and just dose with prime.
 
Those cartridges on RO units don't last forever, they need to be changed regularly. How long they last, depends on the feed water. The carbon cartridge may be one of the short lived ones.
A few drops of sodium thiosulfate, calcium thiosulfate may be more economical, and depending on what kind of water your fish need, a drop of lemon juice(acetic acid)also removes chlorine
 
Thanks guys. I tested the water out of my tank and it tested negative for chlorine. I know the carbon filters dont last forever but i though it would last longer than 3 months. So when i get paid im going to stock up on carbon filters.

Its. Weird that the tank water did not show signs of chlorine.

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The length of the cartridge depends on the amount of chemical it has to neutralize. If your tap water is saturated, it will go quickly. The max allowed in the US at the head of a distribution system is only 2ppm (if I remember right). We used RO/DI for lab water, and cartridges were on a 3 month rotation.
 
jerzyperson said:
When I do water changes I rarely add stuff to get rid of chlorine. If the fish seam fine then I wouldn't worry, but I would prolly get the chlorine out. Simple way to do that is just some chlorine out stuff.

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Your tap must have low chloram/chlor for that too work out, ive read a dozen or so threads on disaterous results when NOT adding dechlor!

As stated above ^^ use prime or better yet safe! That way you can always be certain your fish are 100%




#1 S. Vettel
 
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