kit

The Salifert Ammonia Test is really hard to read for me between 0, <0.15, and 0.25. the readings look different in all types of lighting. Near the window it has a brownish hue to it, not deep brown, but you know... In a white lit room it can be white, yellow or brown depending which way I am...

There are a bunch of models. What is the most appropriate one for monitoring phosphates at reef levels?

Hey all. I am hoping that somebody has some old Red Sea Test Kit vials and Titrator/Syringe's laying around. Maybe you have spares, an old expired kit you don't use, or switched to another brand of Test Kits. I am hoping you have what I want and you don't need it any longer. I do NOT...