Poso NO3 me Vasi to test tis Red Sea

[quom]

Edw kai 3 evdomades pou eftiaksa to kenourgio mou enidrio 60 ltr exw tin eksi aporia.

Se ti epipeda prepei na krataw to NO3 me vasi to test tis Red Sea, mias kai to enidrio periexi fita kai ta perisotera einai tis grigoris anaptiksis (keratofila, klp...). Tin teleftea fora pou ekana to test tou NO3 mou edikse sto low range 5.0 p.p.m. einai idi poli anevasmena i den prepei akomi na anisixo!!???