Aphids are just a fact of over-wintering/growing peppers indoors.
I try to use the least radical methods. Ladybugs are best, as long as you spray a bit of moisture
on the plants so the Ladybugs/larvae don't die. Soap sprays will work...but need to be re-applied.

Basically, I rely on the vitality of my plants to grow new leaves faster than the aphids can eat.
But this means ample sun/light and plenty of available nutrients, especially the micros.
Also, the sooner you can begin hardening off your plants, the tougher the leaves will be.
Commiserating,


Josh