i use 2 x eheim 2252 internal filters which have a turnover of 1200 lph each
i fill the bottom cartridge with the normal filter sponge that comes with the filter and the top 2 cartridges with a media called polyfilter this is the best filter pad on the market by far
http://www.marinedepot.com/Poly_Fil...Media-Poly_Bio_Marine-PB1111-FIFMMEPM-vi.html
its expencive but the best
i fill the bottom cartridge with the normal filter sponge that comes with the filter and the top 2 cartridges with a media called polyfilter this is the best filter pad on the market by far
http://www.marinedepot.com/Poly_Fil...Media-Poly_Bio_Marine-PB1111-FIFMMEPM-vi.html
its expencive but the best