what happen to these two plant??

a-hua

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Aug 5, 2007
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hi

questions again...:(

1b95d4b5.jpg

Eusteralis sp from Vietnam
the color on the leaf's edge become different(medile one)...just like melting...or *wet papper*...???

DSC01749.jpg

Polygonum sp from Sao Paulo
all the upper leaves fall down....??

thanks
 
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a-hua

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Aug 5, 2007
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someone nice in another web site replies the first pic is becuse the lack of fe or trace, and the second is too much co2...
what do you think?
 

dutchy

Plant Guru Team
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Jul 6, 2009
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Too much CO2? Aquatic plants never get too much CO2. You could have 200 ppm in there and they would just grow better and bigger. Looks more like NO3 limitation to me.
 

Tom Barr

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Jan 23, 2005
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What does too much cO2 even look like?
Stay away from folks telling you that.

The two plants are fairly easy to care for.
You can see the plants next it are fine.

Rather than too much, it's much more likely it's too little of something.
Plants melt when they suddenly run out of CO2, or stunt their tips.
Another thing might be lighting change, new bulbs etc.

Some will melt back then.

You can do some water changes, add the ferts back and see how recovery goes.
CO2 is much harder to address than the ferts, which are rather easy.

You have algae all over the back, so the tank is not getting the care and effort it could. PO4 lacking, lacking CO2 something......... that's a heavy crust of GSA.

Regards,
Tom Barr