Optimal filtration for dense tank - advise wanted

[borman]

Dear Friends.
I faced with new big question and problem.
My new tank design have 2 very very dense group of plants in the background. (more than 500 stems of Rotala Sp green from each side+very dense M.Umbrosum)
View attachment 1414
While this bushes was in process of grows and forming - everything was quite good. But now when scape is ready I really dont know how to organize best filtration and water current.
Main problem that in this 2 group of plants accumulate a lot of scum. And even my 2 1200/l hours filters+1 surface hanging skimmer not allow me to "push and suck" this scum. And of course as result i have thread algae outbreak (first time in my 3 years hobby)
So for me is main question is how to organize inflows and outflows of my filters to solve my question
I attached schematic picture of my plants and current filters locations.
View attachment 1415

Any advise will be very helpful
Thanks
Larry

 

[Tom Barr]

Fluff the plants when you do water changes, also, consider more frequent water changes. Get all the dirt off the plants.
Consider uprooting instead of topping and good water changes after trims.

Flow seems fine to me.

Regards,
Tom Barr