accuracy

I'm about to do my very first ICP test (Fauna Marin) and send it over to ol' Deutschland soon. I'm wondering when you take your samples for the test? I'm recovering from a massive hair algae bloom which cratered my nutrients, and I've been doing more than the usual amount of water changes just...

A quick poll about how to be sure your trident is giving correct measurements: You can pick one or more than one. This poll is about the trident - and is not designed to be a negative. Its designed to see how many people actually do what Neptune says they should do when using their equipment...