The kits you have seen may very well have been "all on one level" but somewhere along the line they will definitely have had a pump installed so this may remove your desire for "bottom filling".
I suggest that, before doing anything else, you:
o Draw what you currently have all on the same level.
o Work out exactly where you wish to move the liquids and solids.
o Draw in the pipework, valves and pumps that you will need.
o Check that you have the room to install everything you will need.
o Treble check that the system will work when installed.
Hope this helps. :thumb: :thumb:
PS
The reason I suggest that you "treble check" the drawing before doing or buying anything is that on many occasions in my working life I saw "as built" systems that didn't actually work.
On one occasion I stood alongside a Head Operator on a refinery as he explained to a Process Engineer exactly why the system installed to mix three Topped Crude tanks wouldn't work.
I glanced down at the sheaf of drawings in my hand and saw the same Process Engineer's signature on them in the "Passed For Construction" section.
Happy Days! :whistle: :whistle: