Yes, it will become a problem unless you use a flow through type of set up. However if that is the water you have then that is the water you will have to use.
Starting with 0 nitrAtes your dilution factor would be much greater than starting with 30-40 ppm in your source water. Even a 10% water change per week does not keep up to the NitrAtes if you feed heavily. You will probably be looking at 50% water changes weekly to stay below 100 ppm NO3. Then again math is not my strong suit and somebody like RickF could do it in his head.