Ammonia in RO/DI
 

A few weeks ago, I checked the water coming out of our RO/DI unit for ammonia. It measured .5 ppm! So we changed all four membranes in the unit last week. This morning, checked ammonia again, and it's still .5 ppm!!

Could other folks in Edmonton check the water coming directly from their RO or RO/DI units for ammonia?

Am wondering why the membranes are not removing all the ammonia from our chloramine-treated tapwater. Chloramine in untreated Edmonton tapwater is about 1 ppm (tested it for someone on a recent thread who was having trouble with their tank).


Thanks :smile:

did you test am in your tapwater?

I'll test mine when I get home for ya bev.

Yup. It states in my post that ammonia in tapwater is 1 ppm (maybe I didn't make myself clear on that). Ammonia in Edmonton tapwater is due to it being treated with chloramine, which is a compound of chlorine and ammonia.

Thanks, Giz. Looking forward to what you find out.

yeah actually what you said was "Chloramine in untreated Edmonton tapwater is about 1 ppm". i asked if you tested ammonia in your tap water.

figure it out yourself

I will try to remember to test some of my RODI water for you tonight Bev, I just ran 30g last night I will test it tonight.

Bev, Hagen kit?

Aquarium Pharmaceuticals kit.

My test kit is good to .20ppm and it reads on the 0ppm color. so it is probably less than .10 Sorry Bev

and the worst part is you are letting chlorine to your membrain which will eventualy destroy them.

we had a big thread on chlorimeans and what is required to break them up and remove the chlorine and one carbon filter isn't going to do it. I run two carbon block filters and it barly works on mine and doesn't last that long (3 to 4 months) I am going to be putting two granular carbon filters befor the carbon blocks which should get me up to the 8 to 12 month mark. Carbon block are nice but they do not remove stuff as good as granular carbon.

Steve