I have no idea of how to pop bank:) but... i tried quantam in ad (2 week thing or 3 week...)

So... Quantam

30% income, 30% pop growth and wow... 70% science

easy way to do this is:

day 1: fb cfs (thanks to those cfs you will support your own ships for a looong time)

you will wait until your homeplanet is full of pop, even more as you will ob the planet to 100% with LQs

expo day: i advice 24 expos(even if the pop aint full yet)

25 total planets, talking about 4500-5500 infra
Fully build your 24 planets with TOs, overbuild those planets with RCs to 100%
Sort your science like this: 35% welfare, 35% economy, 30% construction

Regardless with what happens with your first planet... those 24 will be full in about 3-4 days ? have no idea... never stop building ships tho... anyway, when u got 75% of the pop on that planet overbuild the planets to 200% with LQs

yes... its the 33.33%TO, 33.33%RC, 33.33%LQ strategy, and keep doing these jumps 24 planets at a time...

i will give 1 example

30 planets, 2.5 mil pop 100%ob only kept same ratio though
research 55% welfare, 55% economy, 50% construction
cannot remember what my income was but i know i had over 300k/tick

couldnt get more planets round was too short and pop banking needs at least 3 weeks which is... life of an ad round

now.. imagine those 30 planets at 1500% ob at the required ratio

4.5 mil gc roughly / tick on 30 planets... now thats something huh ?

go try it i know i will
imagine those 30 planets overbuilt to 70

EDIT: ob to 700%