Is this typical CO2 deficiency or maybe iron or K?

[Sanniejop]

Need some help from more experienced people.
I have some type of Rotala in my tank. In some places it now shows irregular or even completely translucent new leaves. On other locations in the tank they are doing fine (second picture). My dropcheckers are both light green but maybe it still can be a dead spot. I was wondering if this could also be an Iron or K deficiency?

Thanks in advance

 

[dw1305]

Hi all,

I have some type of Rotala in my tank. In some places it now shows irregular or even completely translucent new leaves. On other locations in the tank they are doing fine (second picture). My dropcheckers are both light green but maybe it still can be a dead spot.

It is likely to be local CO2 deficiency which is, related to flow patterns. Rotala spp. are plants that come up a lot in "growth issue" threads <Rotala Rotundifolia - Growth Issues>

I like @Kezzab 's bog garden <"Rotala rotundifolia">. I'm guessing that all the Rotala spp. would all be happiest emersed and growing in a peat bog.

I was wondering if this could also be an Iron or K deficiency?

It is unlikely. Ions spread throughout the water column. The tanks a bit like a thin soup when you add salt and give it a stir, it is all seasoned, you don't have patches that are salty and patches that aren't.

Potassium (K) is mobile within the plant, so could be moved to new leaves. Iron (Fe) isn't, but deficiency has some <"very specific symptoms">.

cheers Darrel

 

[Sanniejop]

It is likely to be local CO2 deficiency

Indeed, i replanted the specific stem just a little bit from it original spot and a few hours later some new leaves already colored up. Clearly a CO2 issue. Makes me a bit less worried i was doing something really wrong.
Thanks

 

[keef321]

It’s Worthwhile checking your bubble counter throughout the day, and see if your co2 is stable. I had a dodgy co2 regulator at one point and got translucent leaves.

Also could look at doing a co2 profile (PH drop at various stages throughout the day), to check it is stable.