I noticed my LR Auto's have a slight nitrogen deficiency and was wondering if it is ok to add a bit of grow nutes to the feeding schedule? I am using Botanicare Pure Blend Pro Grow and Bloom,they are in the flowering stage so i am not using the grow nutes. Leaves look healthy,but obviously there not because their starting to yellow more....only the older leaves! Some are completely yellow,not too many! Any other suggestions? Other than that the plants are beautiful.