Love how professional some of these set ups look!
I am using a funnel thing from FAF. It works well for keeping stuff suspended.
(the yellow thing on the bottom is actually resin to seal the outtake, not residue)
Since I dose the phyto directly in the display tank I also prefer to use the FAF fertilizer/F2. Just makes me feel 'safer'.
I just started so can't tell how well it will work out in the long run but so far so good.