It seems to me that a similar nutrient stripping process occurs in the
floating raft configuration used by Dr Rakocy in the Virgin Islands.  In
this configuration the plants are reared on polystyrene floats w/holes.  The
roots sit in the water to be treated as it flows down a channel of 30 cm
water depth.  Plants are harvested from one end of the channel and new
seedlings are placed in the opposite end.

I would like to ask you for a comparison of strengths and weaknesses between
your conveyor system and a float system--especially as related to nutrient
uptake, plant health, efficiency and/or speed of processing the effluent.

Also, were any studies conducted where the effluent from the conveyor system
was re-used in the trout culture system?

Thank you,
Regards,

Sam Levy
Eilat, Israel