High Nitrates In Tap Water.. Help Plzzz!

[sharz]

I did a water test the other day and found out I have, and have always had nitrates of about 50ppm. I have zero ammonia and zeros nitrites.
To combat this I tried different conditioners, I am currently using Seachem Prime which I don't think makes a difference at all to be honest. The high nitrates are from my tap as I tested my dechlorinated water before putting it in the tank.

I now have no idea on how to reduce nitrates! I always do a 50% water change but obviously that wont be much help if im just throwing nitrates back in! Im currently using a product called purigen which is again by seachem, which goes in the filter so im hoping that helps a bit.
Can anyone shed some light on this please.. I have an irubesco (red eye) puffer in my tank at the moment so im trying my best to get the nitrates down for him..

 

[Mikaila31]

What does your tap water test at for nitrates?

 

[ellena]

Plants should use up nitrates. Is the puffer a particularly sensitive species? 50ppm isn't that high for regular fish.

 

[sharz]

my tap water reads about 30 or 40ppm and i have plants in my tank.. its fairly planted and the nitrates still stay high due to the tap water as i know i am not overstocked. All puffers are sensitive to a certain degree but im not to sure if this one is very sensitive or not but i wont to reduce the nitrates just to be on the safe side. Is ther any conditioner i could buy? I have looked into tetras minus nitrate product but was told its a load of crap

 

[N0body Of The Goat]

Contact "Hamfist" as he recently bought a nitrate remover for something like £30