I would get the 100.

Food for thought....I see you have GSH in your forage pond. If it turns out you don't have enough forage for the SMB in the RES only pond you could always transfer in some GSH. IMO GSH are great appropriate size forage for SMB. One problem though might be the SMB target the GSH and neglect your RES....

You also seem to have a good supply of small RES in the forage pond that you could feed the RES only pond if required.

I think you will love the SMB. Lots of work arounds if you think you have too many.


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