Love your video. Save your back use a low chair or stool instead of bending down or put the post on a table and build what you can on the table. Protect your knees and back. God bless!
in this system we use a 300l fish tank and 2 Grow Beds with 160l in total. Aquaponics systems work good with a ration starting from 0,5 (Grow Bed volume) : 1 (Fish Tank volume), 1:1 is the optimum!
grow beds are the filter in this case. we use additional compost worms in the beds to break down the solids. sump is not necessary because it's a simple flood & drain system and no CHOP construction.
Unfortunately not on the video. I put it in, after a few days of cycling with bacteria: ofera.at/collections/aquaponik-zubehoer/products/aquaponik-bakterienkultur-und-mikroorganismen-350ml