sorry still didnt help the lil guy?
and i know jeffrey is the MAN!
Sorry, to stay more on topic:
It is the best.
After adding Prime, it will diffuse(both my Brownian motion and the current of your water) and mix with your water. You don't want to worry about whether it will mix. As long as you are adding enough(i.e. 1 capful for 50g), it'll do it's job.
Next, our discussion has turned to whether Prime removes anything out of the water that the plants need. For starters, most of what Prime removes your plants do not need. The number one thing Prime is concerned with is Chlorine and Chlorine derivatives. Your plants really don't want these. Prime also removes heavy metals, for the most part, the heavy metals in your tap water, your plants don't want. And finally, we are discussing what effect Prime has on Nitrates, which your plants want.
It is possible that Prime will throw off your water test. However, any effect Prime has on your water test is far less than the effect that a water change has. Meaning, when you do a water change, your levels are going to drop way low anyway, so you won't even notice what Prime does. No worries there.
I think I hit everything you originally asked.