The Syngonium grew well on just what the fish produced- but it went bananas when I started with iron. It just exploded in lush growth. The Palm? Time will tell. But C. elegans is the most common of its kind- sold everywhere. But others would do well like" Cat palm" a clumper palm looking like bamboo. Most are adapted to wet feet. If you had a super bright light- one of those ADA 100 watt thingys ..you could grow the Red Sealing Wax Palm..and just blow the world away.
Yes,I am considering trying a seedling of that palm with red trunks.
Sunlight...is so different. It changes constantly unlike our artificial lights through the day..it changes by the season. My Sword knows its spring from the longer days and is flowering. Things like that. Oh,and times to take the best photo!..Cloudy days work best,late in the day. It's not aquarium keeping for everybody's taste,I know that.
I notice that my tank is more like those very shallow Asian streams with high shade by forest trees. Hence,Crypts,Ferns,mosses dominate my tank. Barbs,Rasboras,Rainbows and Danios all get along and sometimes even chase each other with no damage..play