mfuchs
Aquarium Advice Apprentice
I am having a problem with high nitrates in my RO/DI water. My tanks all have nitrate levels approching 100mg/l!!! I tested my RO/DI water and it shows 12mg/l.
I figured that maybe it was time to change out the DI filter so I ordered a new one. I installed it and started making new water. I tested that water and it also tested 12mg/l. So now I am thinking that maybe my source water is really high in Nitrates. So I tested it, and it also tested at 12mg/l!! So I guess my DI filter is not removing any NO3.
I always thought that the DI filter removed Nitrate as well as Nitrite and Ammonia and other compounds? Or is my problem with the RO membrane?
My ammonia and Nitrite levels are both zero.
Also, I figured that my NO3 is high because all my water changes have not been removing NO3, but adding it. Is my line of reasoning correct? Or should I be looking for another culprit for the High Nitrate?
Thanks in advance for your help.
I figured that maybe it was time to change out the DI filter so I ordered a new one. I installed it and started making new water. I tested that water and it also tested 12mg/l. So now I am thinking that maybe my source water is really high in Nitrates. So I tested it, and it also tested at 12mg/l!! So I guess my DI filter is not removing any NO3.
I always thought that the DI filter removed Nitrate as well as Nitrite and Ammonia and other compounds? Or is my problem with the RO membrane?
My ammonia and Nitrite levels are both zero.
Also, I figured that my NO3 is high because all my water changes have not been removing NO3, but adding it. Is my line of reasoning correct? Or should I be looking for another culprit for the High Nitrate?
Thanks in advance for your help.