Light blocking, floating plant

HI all!

Looking for a floating plant that will grow easily in low tech, low light. Since getting my different tank light my betta is able to see his reflection more and is doing a lot of flaring and glass surfing. I don't want to stress him so much, but I have other plants I'd like to keep alive. I'm also open to plants that can be placed in an aquarium but that aren't necessarily aquatic plants, I think pothos is commonly used?

I also really like the plant that looks like a very fine fern but I often see it floating... Upside down? I can't figure out what it is nor do I know it's light requirements.

Any suggestions?

 

Maybe water lettuce. I know a clump of hornwort can create a shady area. You could also use duckweed so it creates a blanket on the surface, but let's some light through

 

Anacharis will grow very well floated at the top of the tank.I have it in low light, low tech tanks and it grows quickly

 

Any advice on how to sort of control a floating plant? So it doesn't just get blown away from the filter? Or do you just wait till it grows in and let it be pushed around?

 

You could use a feeder ring

 

Second the hornwort, looks pretty as some sinks a bit, super easy to grow... I have some of mine tucked behind my heater to anchor it...

 

Second the hornwort, looks pretty as some sinks a bit, super easy to grow... I have some of mine tucked behind my heater to anchor it...

I *think* that's the needly one I was thinking of! I'll have to look for it.

 

Here's what my hornwort looks like

I also have a stem I weighted so it stands straight up