I understand your question now… I’m sure your going to get different answers from different people but from my personal experience I would use KoolBloom and not use Carboload…
I am a big fan of Advanced Nutrients products but I found mixing bands doesn’t seem to workout the best together… It can take your ratio’s off balance fast…
Since your using GH as your base nutes I would just stay with there products… GH is a good product lineup no worries there I have had many great grows with them… KoolBloom is like Advanced Nut Big Bud…