I'm currently using the Aquarium Phanmacuticals liquid master test kit, and thier alk. test as well. I've noticed however, that often times the results from my test, the LFS's test, and a buddy's test are different. At times, the differance on my NO3 is over 60ppm between the lowest and highest. Is there a more dependable test on the market that is not too outlandishly priced?? Are the dry tabs perhaps a bit more dependable? Any thoughts in this area are greatly appreciated.
"J"
"J"