Pls go down a few posts & read thread called "Wilted Arrowhead Philodendron".

It's discussing this exact plant, including using the very same picture. Pls. read the comments we have ALREADY posted there. Thanks.

Thanks, i posted there too, but figured it would get lost in other posters comments. I will recheck there.

Hi KCook,

I thought you might be new w/ the double post, but I see you're not.

Pls. just keep on the other thread, even w/ the other comments, it's up to you to pls. bring it back up to the top & continue on existing thread, not make additional threads. Just so you know. (Even the "Rules" ask us not to post same in multiple threads.)

Short version answer is you'll need to take cuttings & put them back into the mother pot to fill it out more.