No filters are seperate.
From tank ------> 2028#1 ----------> To tank
From tank ------> 2028#2 ------->18wUV -----> To tank
I'm crurious on how much flow the 18wUV will cut.
If its to much I'll go with:
From tank ------> 2028#1 ----------> To tank
From tank ------> 2028#2 ----------> To tank
From tank ----> Rio600 ----> 18xUV ----> To tank