Filtration??

[Easyaqua]

I have a 170l tank with 6 tiger barbs ( 3 normal, 1 green and 2 platinum 3 golden barbs 2 cories 1 bristle nose. I am wondering if this is enough filtration:
1 submerged filter for a 60l tank
1 DIY moving bed filter
1 1100l per hour sump system
And a whole lot of live plants in the tank
Should I get an additional canister filter or do I have enough filtration also I am getting 2 more cories 2 more golden barbs 1 more green tiger barb

 

[Laser]

It sounds like you already have plenty of filtration to me.