Leaf Curl problem - pictures and info included. Does too much CO2 cause curl?

[jaydee84]

troubleshooting form pls
could be a N def root bound when was last re-pot. Unless insect damage has occurred or the plant is suffering from a severe case of calcium deficiency, the plant is trying to tell you that it is water stressed. It's hard to tell exactly what the culprit is,

troubleshooting form pls