Floating plant growing runners underwater

As the title says, I am finally getting runners out of my floating plant but they are growing underwater and I'm afraid they will melt. Should I let them be or cut them so they can float to the surface? I can take a photo if needed

 

What kind of floating plant is it? Maybe a pic would be helpful.

 

What kind of floating plant is it? Maybe a pic would be helpful.

It was labeled as Limnobium laevigatum. You can see the small new leaves I'm talking about underwater

 

I have not seen this one before. I would guess plants do their thing. I would just leave it alone.

 

Limnobium laevigatum is commonly known as Amazon Frogbit. Although the leaves float, it propagates by putting out runners underwater, but new leaves will develop at the surface as long as you have good lighting and nutrients. If growing conditions are good, it will grow so quickly that you will need to cull plants. Either give them away to friends or toss them in the garbage. Please do not flush them down the toilet or allow them to get into sewers as it is an invasive species in some waterways.

 

Limnobium laevigatum is commonly known as Amazon Frogbit. Although the leaves float, it propagates by putting out runners underwater, but new leaves will develop at the surface as long as you have good lighting and nutrients. If growing conditions are good, it will grow so quickly that you will need to cull plants. Either give them away to friends or toss them in the garbage. Please do not flush them down the toilet or allow them to get into sewers as it is an invasive species in some waterways.

Thanks for the info, so should I just let it be until the runners float? Or does it mean I need more lightning/nutrients to get the leaves to develop at the surface?

 

Wait and see what happens. If it does not multiply over the next few weeks, you might need either more light or nutrients.