Need help on plant ID

[loverans]

Can someone helps to identify these two plants ? thank you.

[Simon]

1st plant is Hygrophila polysperma
2nd plant is Rotala rotundifolia

apologise if I get the ID wrong, haven't been IDing or around plants for quite awhile

[lorba]

first one do look like a ludwigia cuba in half converted form to me.

[loverans]

Thanks bro. So is 2nd plant confirmed Rotala rotundifolia ? Are both plants mid or background plants ? How is the growth rate like ? Mine is a 3ft tank with 234 watts.

[lorba]

yes. It should be R. rountidifolia.

Both are rather fast grower and needs strong light to look nice. Your lighting seems fine, PL or MH?

I have 300W (2x150W) for a 322 when i keep a stem plant tank.

[loverans]

Thanks bro. Mine is T5 39W@6. The Ludwigia within a week is reaching towards the water level. is it something wrong ? How to stop it from growing upwards ?