Thank you for the detailed reply 
Yeah I know it didn’t stack with itself, I was just hoping the damage would be more impressive. I have non dot builds hitting much higher dots and if I look at other builds as a comparison like this [1.3.0.8] Decay Aegis Sentinel - All Celestials - FoA Update only 1.2k added dot dmg yet hes landing over 400k dot ticks. I know the skill gets total dmg modified but I didn’t think that was a lot of base damage. I just find the damage part of the game so confusing sometimes.