Community Tank Maintenance - Java Fern Thinning and the Riccia Fluitans struggle

Aquarium maintenance and a long overdue Java fern thinning.
Day 821 and the Java Ferns are in need of a good thinning. They form a big, shapeless green block that needs attention. The top of the aquarium is covered with Riccia Fluitans preventing proper surface agitation and gas exchange. I tried, for a very long time, to get rid of it but I realised that is just impossible. So, I've learned to live with it.

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📏 Dimensions: 100x45x45, 200 litre, Optiwhite
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🏔️ Hardscape: Elderly Stone
Spider Wood
ADA La Plata sand
ADA Aqua Gravel S
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🔧 Hardware: Light - DIY Led Light
Filter - JBL CristalProfi Greenline e902
CO2 - Aquario Standard CO2 Set 2L
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Plant list:

Juncus Repens
Rotala Wallichii
Cyperus Helferi
Red Tiger Lotus (Nymphaea Zenkeri)
Bucephalandra Kedagang
Bucephalandra sp Red
Bucephalandra Wavy Green
Bucephalandra sp 'Velvet Tricolor'
Bucephalandra ???
Anubias Nana 'Pangolino'
Anubias Nana 'Pinto'
Anubias Nana
Microsorum Pteropus 'Narrow'
Microsorum Pteropus 'Trident'
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