need help replace new big tank

[khoivo1]

hi, i am geting new tank replace the old 180g tank with 210g starphire but never done this before,,i only have big fish in there,and live rock,,,
now the old tank some body want to buy it,,and i want to know what to do with all the fish i got about 15big fish,,
will it be ok to put them all in 150g rubber maid tub??
i can run the skimmer external and return it right into the tub and put the heater in there too,,,that all i can think of,,,,,what else should i do ,i really dont' want all the fish die,,,so please help if you have done it before,,,
i am plan to house all the fish for a few month until my new tank is ready,,so it could be 5-6 month thanks for all help guy

 

[tank watch]

i think you will need an even larger tank than 210g

 

[khoivo1]

seriuosly,,,should i place all fish in the 150g tub for 5 or 6 month?
or what would you do,? thansk