Eheim 2028 about 300 with bio media.
U can consider to add 1 small internal filter pump to creat more flow for better ciculation of CO2 within the tank.
Always oversize your filter abit more to take care of head loss when pumping from floor lever.
If yours is 422 tank, can consider to add 1 more secondary cannister filter for better filtration. ( use those make from china one will do)
ADA soil not too sure ,can check with Mr Chan at NA.
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