[DavidZ]

Should I up the root tabs?

No problems with the other plants.
Had this plant for a year.
20% of the plant is turning, yellowish with wear trough.

 

[tetra73]

Try here.

http://www.algone.com/aquarium-articles/aquarium-plants/aquarium-plant-health

 

[the4x4hoss]

Looks like an iron deficiency according to tetra73's link.

 

[Sparky007]

Mine was doing that too. I started adding nitrogen and it stopped. What vers are you adding.

 

[tetra73]

Looks like an iron deficiency according to tetra73's link.

I think it is more like Magnesium deficiency since the veins are still green. For the OP, you may need to dose some extra micro-nutrients.

 

[the4x4hoss]

I think it is more like Magnesium deficiency since the veins are still green. For the OP, you may need to dose some extra micro-nutrients.

It may be a combination of both. I would give the tank a dose of Flourish Comp and see if it helps.

 

[DavidZ]

Thanks guys!
I do root tabs
Will dose some liquid ferts and see