Shock Nova & reduced area of effect

I was trying to theory craft a build and want to know if there is a minimum area of effect on shock nova.

The idea was to get reduced area of effect on shock nova so that triggering it with a melee skill will guarantee both ring & nova hit the melee target, effectively doubling the damage.

However, in testing it looks like there is a minimum aoe which prevents this. I tested it with (for theory crafting purposes);

Anomalous conc effect = 40% Less
2x Astral Proj = 40% Less
4x intensity = 45% Less

For a total of 125% less area of effect.

Based upon other examples I've seen, this should have made the skill have 0 radius, and do no damage. However there is still a sizable circle on the cast.

Am I misinterpreting the "Less Area of Effect" modifier, or is there an inherent minimum radius on shock nova?

Any insights appreciated!

Less modifiers are multiplicative with another, not additive.

Assuming you use a level 1 Intensify with 4 stacks of Intensity, you would reach roughly 20% of the base area of effect, which is about 44.7% of its base radius.

There is a way to reach 0 area of Effect, which is by stacking legacy cluster jewels in standard with the notable that grants an additional maximum stack of Intensity.

If a spell has an area of 0, it does not hit any enemies, even if the centre of that area overlaps with an enemy's radius.

I do not know what happens to Shock Nova if you have 0 area of effect.