Mono's are fairly slow growing as far as Pbass go...The two month guideline is about right from what we've seen. although our grow out system is as follows... Either a 45 corner or a 50 or a 60 depending on the batch. Then a move to either the 150 or the 110L...next stop after that is the 8' 240...and then on to the built in. (when completed of course)