Plant ID needed

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I've a few plants that I've no idea what they are, showing pics below. Many thanks for anyone's help!

1. I'm thinking this is some form of rotala? Rotala Macrandra Green? Sometimes the underneath of the leaf will be pink, but this time when I took the photo it isn't.
   
2. Bought at C328 and was deep red, now it is green-red. No idea what plant this is.
   
3. I don't know where this grew out from...
   
4. Same for this plant, don't know where it grew out from.
   

[wongce]

1)red plants are generally high requirement, if there is not enough nutrient/light/co2 it will not display its best colour

4)glosso

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1)red plants are generally high requirement, if there is not enough nutrient/light/co2 it will not display its best colour

4)glosso

So 1) is Rotala Macranda Green?

[thebaldingaquarist]

1 and 2 - i believe is HYGROPHILA POLYSPERMA .
3 - looks like a runner. can have a picture of the mature plant beside for further ID.

For green -> red, if the plant is a root feeder, consider iron tablets. if not dose iron into the water column. High Light (accompanied by CO2) is necessary/

[barmby]

1: Rotala Indica
2: Rotala xxxxx or Very stunt hygrophila polysperma
4: Glossostigma elatinoides

These are all high maintenance plant - good luck ; )

[blurless]

1 and 2 - i believe is HYGROPHILA POLYSPERMA .
3 - looks like a runner. can have a picture of the mature plant beside for further ID.

For green -> red, if the plant is a root feeder, consider iron tablets. if not dose iron into the water column. High Light (accompanied by CO2) is necessary/

For 1) and 2), they don't look like HYGROPHILA POLYSPERMA, leaf don't look the way it looks like when I search on Google. 1) has a shorter leaf while 2) has longer leaf.

For 3), it isn't a runner. It grew out from a rhizome and I have C. Parva on its right but the leaf structure don't look anything like Parva and it grows slower than the Parva beside it. The other crypt in my tank are C.Tropica and C.Undulata. Maybe this plant is too young to tell what it is...

My tank is high light with CO2 and fan cooling, but I'm dosing it rather irregularly...about once a week on EI basis (my EI might be insufficient... =| ).

1: Rotala Indica
2: Rotala xxxxx or Very stunt hygrophila polysperma
4: Glossostigma elatinoides

These are all high maintenance plant - good luck ; )

Maybe that is why the glosso is growing taller...it is in a shaded area.

[felix_fx2]

2: look like stunted rotala.