I would definitely do the organic removal thing. I always do that from day one to lessen the change of anything starting along with a short light duration and seeding of the bio-filter. Do you have plants that grow or mostly slow growers, etc taking up most of the space. I guess I'll see that from the pic. The whole carbon is bad for plants is really alot of BS. If you have algae issues or want to prevent algae issues don't hesitate to use carbon and/or organic waste removal media.
In addition to changing water do you remove dead leaves regularly and what is your fish load and feeding. The cleanliness of the water is key especially if you have already reducing lighting, etc. I'm no a big fan of dirt bottoms, but does that get stirred up at all?