What is the most annoying plant that you still somehow keep in your tank(s)?

I spent a while getting duckweed *out*... and yesterday voluntarily added some back in. I got some norman lapeyes, and apparently they're pretty easy to breed but need floating plants.

The mayaca fluviatilis in my 36 is one of my favorite plants. I recently got rid of all my stem plants, but kept that one. However.... it's a PITA. It grows WAY too fast. If I don't trim it, it all tangles on top of the water, and I have to cut out huge chunks. It gets so think that the middle plants die because they don't get any light.

Lasy night I gave up, I ended up throwing out huge chunks. I kept enough to fit in 3 cmall bunches, and theyre' in plant weights so they don't get uprooted as easily. We'll see how it goes.
 
Java moss. Definitely. It gets EVERYWHERE and drives me freaking batty.

Kristina
 
Yeah, java moss: poo catching, algae growing, filter clogging, spreading, slow growing until it magically grows faster than I trim it plant that shrimp & fry like.
 
moss
 
java moss... cant get it out of everywhere no matter how hard i try
 
I'm beginning to get annoyed with the hornwort that I put in the tank. I can't get it to stay put anywhere. Someone had suggested stringing it through those feeder rings and sticking the feeder ring at the bottom of the tank - that worked for like... 3 weeks, and now it's all free floating again. I'm not sure why it didn't stay in the feeder ring. It had plenty of water flow around it, and it wasn't in the substrate or anything. I guess it just doesn't want to be held down. But it's frustrating that it whirls around the tank all the time and gets caught on things in the front of the tank, which makes it hard to see the rest of the tank since it's so tall... I really just wanted it near the back of the tank, but so far I have no idea how to keep it there. :(
 
I gave up on trying to free float hornwort- the current in my tank is a bit like a cylone- so I'd have this cthulu seaweed monster chasing my fish around the tank- Now i just stick an inch of each stem in the sand, and call it good, stays at the back of the tank where I wanted it.
 
AquariaCentral.com