How inaccurate are test strips?
Everybody talks about test strips being inacurate ,what I would like to know is ,in what way? Do they show LESS (NO2,NO3 ,PH ,GH) ,whatever ,than there actually IS in the water ,or MORE than there actually is?
I tested with JBL and Tetra strips at the same time , in the same water ,and the colours were identical....I only have Ammonia liquid tests.
Can't come to work today ,Boss......I've got Bolbitis...