Spell damage scaling with Essence drain and Delirium weapon (decay)?

Hello everybody!
I need some help with this mechanic because I searched for it but I'm even more confused than before.
My character uses Essence Drain and a Delirium weapon (your hits inflict decay dealing damage over time). Will the "increased spell damage" nodes affect Decay damage too because I'm using essence drain (which applies spell dmg modifiers to overtime), or I'll have to take "increased chaos damage" nodes to make it scale? Thank you! :)

Yes, they will, any DoT tacked onto skils like that will also benefit from spell damage.

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raics wrote:

Yes, they will, any DoT tacked onto skils like that will also benefit from spell damage.

thank you for the answer!
does "decay" scale with "increased chaos damage" too?