Are poison clouds affected by magic size? Or is it limited to Intensity?

My friend wants to know if he should remake his poison mage except with poison moved to secondary magic, however we recently discovered your second magic is around ~50% smaller than the first one.

Would the poison clouds be crippled by this reduction? Or would it still work as a decent area denial/DOT secondary?

question

thats a wierd one. I think that tiers (and explosion size) may effect cloud size but i think intensity is the one mainly increasing it. so maybe? on mage i had an ash poison file and i think it had no major effect on beam, maybe blast or explosion