hello i bought a jbl combiset testing kit. it comes with kh. ph, no2, no3, and fe, but doesnt have ammonia, which is what im confused about. is fe considered ammonia? if not, should i buy an additional ammonia tester? what do i do?
/cgi.ebay.co.uk/NUTRAFIN-AMMONIA-FRESH-SALT-NH3-NH4-TEST-KIT-/200461301656?pt=UK_Pet_Supplies_Fish