What is hurting my staurogyne plant? Also fry question

[sharkl11]

DIY co2 checker is green-border line yellow.
Light is T5HO 39wx2
Dosing Macro-micro mix from planted aquarium.

Once the leaves have it, they start to kinda melt and detaches.

Also when should I release my iridescent lampeye fry back into my community tank? Anything is appreciated. Thank you.

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[Biollante]

CO2 Now And Forever! Brought to you by the The Military-Indutrial-CO2 Complex!

Hi,

That is red algae, think of it as the flat form of BBA, most of the time this is low or unstable CO[SUB]2[/SUB], whether this is due to circulation, method of injection I do not know.

Another possibility is lack of Phosphorous, might try raising the phosphate to around 5-ppm.

Biollante

 

[sharkl11]

Thank you. I will make sure the area has improved circulation and add phosphorus.

 

[Aquadream]

I had the same in my AS tank. It turn out insuficient Iron. The AS is over year old and I did not bother to dose Iron cause the other plants seem ok with the Iron levels from the micro mix. After dosing Iron regularly all came to glory again.