Those Tomatoes plant show sign of yellowing leaves. I need to check water PH, adjust and may add iron in water to reduce the yellowing.
Two changes done since last update on this set. Water inlet I redo from bottom and feed through to top of growbed, no more ugly pipes on the outside.
Another changes, 15mm siphon I replace it with 20 mm siphon, this able to use all water from the pump without diverting.
I also put a timer, to switches OFF at night, this will reduce pump maintenance and chances for it to fail is less.
Water has been clear, not much sediment, maybe because of few fish in this tank.
More to do on this kit to ensure it is able to produce comparable plant growth.