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Dull-colored Cryptocoryne, possible nutrient deficiency?

1K views 8 replies 5 participants last post by  Jeffww 
#1 · (Edited)
My Cryptocoryne (I think it's a green wendtii, but I'm not sure) is growing dull-colored, narrow leaves, as you can see in the photograph. When I bought the plant, its leaves were broader, and a very bright yellow-green. I have since trimmed the original leaves as they became overgrown with algae, so you can't see them in the photograph.

Could anyone speculate as to whether the plant is showing a nutrient deficiency?

I dose KNO3, KH2PO4, and Plantex CSM+B; I am using a Fluval CO2 20 in a 10-gallon tank (which, to the best of my calculations, brings the CO2 up to around 15ppm), and T5HO lighting.

http://imgur.com/iL44J


Here are some new photographs: http://imgur.com/a/hAVwv#0
 
#3 ·
Could be the plant was being grown emerged when you bought it or shortly before. I am growing some wendtii submerged and emerged. The emergant growth tends to be broader and darker, while the submerged leaves tend to be narrower and "reach" towards the surface more, so I am not positive this is a nutrient deficiency. Could be normal, though I would be curious to hear input from others.
 
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