Pot size?

I have done three crops now using 11litre square pots which I think are 25 x 25 x30

I was wondering what is the best size pot to use if you want to keep your plants at a max height of 50-60cm but also want to get as many in a small space as possible?

my flowering area is 2m x 1,2m

and have 2 600w HPS cool tubes

how many do you think I could get in there safely?

uh not too many here think in metric, even us Canadians.

12inch high by 10inch wide I think is the conversion

lotsa variables here. including the strain and if you are doing any techniques such as LST or fimming. could you provide some more info?

in english units you want 1 gal of pot for each foot of plant.

if my conversions are right, you want to keep using those 11 liter pots.

A general rule of thumb is 1 gallon per foot of height. 60cm is 2ft which translates to 7.5L.

I'm assuming this rule of thumb was in US Gallon. If it is in Imperial Gallon then it translates to 9L.