Connecting the DoTs: A Summoner Guide

[Havenchild]

So basically you have

[0-2.5] - no dot
[2.5 - 7] - dot

Isn't this assuming 0 precasting? So literally, The tank pulls, THEN I decide to use Bio II?

When in actuality what I do, is let's say at 4 seconds before the mob is pulled, Im already popping RS + POT + Casting Bio II. So I mean unless by some terrible stroke of luck, I just missed the DoT tick by micro seconds, I would get a first tick in that 0 - 2.5 window a Bio II dot tick and then by roughly 4 - 5 seconds I have all 3 up.

I guess the difference between what I'm saying and what you're saying, largely seems when do you actually count 0 seconds.
When the encounter starts? or when the first DoT goes up.

I use the first DoT (which falls in that 0 - 2.5s window) and work with potency per sec while if I'm not mistaken, you are using when the encounter start time and looking at it from a potency per GCD.