Do you dose in hydroguard during the flush schedule or would this be considered a chemical? I would normally add some after each drain/fill.
Hydroguard is beneficial bacteria, not a chemical. You can still dose in flush if you need to
I flush without only because its the end of the grow and I like to get really clean, crisp buds.
Ive never run into a problem of any bacteria growth during this period, I think you get a higher chance of bacteria issues when using nutrients.
Maybe try it both ways with the same strain to develop a sense of what you prefer!
I use Hydroguard and AN Flawless Finish for flush except the very last week I think. I can’t find my dosing sheet as my grow room is being moved around right now. Then at the very end, I turn the lights off 48 hours for some reason I read about.