Would 32 oz be to big and or 16 oz not big enough.
I am totally clueless on this so would appreciate the help.
I used to use both they are great one will obvioulsy have to be filled more often than the other.

If you have enough room between the tubs I say go with 32 OZ.

You might also want to look into watering system depending on how big your colony will be you will soon find out that filling up those bottles gets real old real quick.

For the ASF I use the 16 OZ ones without any problems.