Finite resources & value improvement plants

[stecal]

I am playing in my first finite resources game right now and some of my planets are hitting 0 kt for minerals. I know value improvement plants in a regular game add 1, 2, or 3 % up to 150% to resource production. What is the effect in a finite resources game? Does it add a % to the total or just add some kt to the available amount? This is important because 3% of 0 is still 0!

Thanks,

Brainsucker (Gee, can you tell I like Psychic)
Phila, PA