ID on 3 plants needed

[Pyramid_Party]

Hi,

Can anyone tell me what they are? I think one is a Rotala Species and another is a Ludwigia species. The other I have no idea. Thanks

 

[WyldFya]

1st... Lobelia cardinalis, 2nd... looks to be a form of Ammania gracilis, 3rd...some form of Alternanthera rineckii, most likely roseafolia, in emersed growth.

 

[Pyramid_Party]

What is the difficulty level in growing these? How big do they get?

 

[Pyramid_Party]

I just read a little about the first plant seems like a hard plant.

 

[WyldFya]

None of them are hard to grow. They all do require a good amount of light, and a good fert regime.

 

[Pyramid_Party]

What about C02? BTW, I picked up a cheesy C02 unit today at petco. The nutrafin Natural Plant System. It's basically like a DIY C02 unit. I don;t like the diffuser it has. What is a good way to diffuse the C02 in your opinion? I was thinking by way of powerhead. I might return this unit I bought.