hello i have been growing for about 2 weeks.i have my plant in dirt and the older leaves firs started to show signs of being sick. first i saw little brown dots in the center of the leaf. now its horrible the leaf tips are moving twords the stem! and the part that is curling is a greyish color. im not sure what is wrong but if you know please tell me. i will be going to plant shop this weekend so let me know what ya think.