It's hard to offer a suggestion with the amount of plants you have in there. I would start be moving that fern to a corner. What plants are on the right side?
yeah that java fern monster piece is from a DW piece i was selling. It didn't sell quick enough and i didn't want the fern to die so i put it in this tank so it wouldn't die (if anyone local is interested you can have it ROAK). I mainly only have glosso/HM/LUDWIGIA REPENS X ARCUATA in there. I plan on actually scaping it soon since the wood seems to have fully water logged now.