Ok so i'm building a farm and there are few things i wanna know related with buffs and debuffs

Monster spawn rate:

Will the Monster spawn rate increase if i have the Battle Potion buff + Water Candle debuff + Blood Moon???

Also for some safety i need healing:

Will the life regeneration increase if i have the Palladium Armor + Heart Lantern + Honey (standing in the liquid) + Campfire + Regeneration potion?

The point of this blog is a question: Do buffs stack on each other? Or can only one be active at the time when talking with same variety buffs?

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