First time growing. My plant is about 2 months old. It is now in the flowering stage. a few weeks ago i saw about two gnats flying around my soil and took immediate action. I used neem oil for a little bit and got suggested to do a flush and use peroxide. There are no more signs of gnats at all but my leaves are turning yellow. it starts with the tips and later makes the whole leaves crunchy. The ph balance was a little high so i added a bit of garden lime to the soil. It looks like it could possibly be a mg deficiency. Any suggestions? No negative comments please. Just looking for some friendly helpful advice. Thank you !!!