Simple Sump Setup ?

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I have an 20G long DIY sump my 125G Discus tank. My tanks was not drilled, so I went with an overflow filter from LifeReef.com. I made mechanical filter tray and that drains into the K-1 micro section, then an 20ppi Poret foam, and last an 30ppi Poret foam from Swiss Tropicals. Also in the last section have an tray of Sera siporax bio filter medium. Using an Mag 9.5 pump for the return. This set up has been tested and true for over three yrs now with very little cleaning of the sump. https://youtu.be/wR4w-uvOAUo