That our plan for now, to accumulate retail sale first.  We did get enquiries for bulk but it's beyond us for now.

Thanks. 

Wonder anyone else into freshwater aquaculture?  Or looking to get into it?

Aquaponics on commercial basis too?

I suggest you split the project into two phase if you are getting into aquaponics. First ensure that your fish culture is proceeding well before the getting into the plant growing. Or else you might be overwhelme with too many problems.

I think nutrients balancing will be much tougher for aquaponics, especially the micro.