2compared to top feed once through method?
I don't get it,
iv been reading on how to save water(global warming type of guy

and I don't see why the recirculation method wouldnt be the better way to save water,
once through method sounds like it will need more water overall?, like once through method, I have to feed 3 times a day lets say id have to fill up the rez 3 times a day?
if I was recirulatin I wouldnt need to fill up the rez for a few days?..
when I was at the hydro shop showing the guy my tomatoes and the MOLDY(AHHHH) Figs I grew outside, he was saying to me that farmers do the once through method, it saves water..
like how is that possible ?...seems like BS