Back. 1  Vitacost Chromium Picolinate -- 500 mcg - 300 Capsules. 4.5 out of 5 stars 11. 2  Vitacost Strontium -- 680 mg per serving - 240 Vegetarian Capsules. 4.6 out of 5 stars 19. 3  Vitacost Glucomannan -- 2000 mg per serving - 180 Capsules. 3.7 out of 5 stars 51.
The most common cause of marijuana leaf cupping aka leaf margin rolling, leaf margin burn, and leaf tip curl/burn is overzealous use of marijuana plant food. In relationship to factors such as marijuana plant vigour and rate of growth. Leaf burn is often the very first sign of too much marijuana fertilizer.
Below you will find possible causes for problems that you have with your marijuana plants. Remember that your problem is not necessarily a lack of a certain nutrient, the problem is often the availability of it.High pH can prevent plants absorb essential nutrients.Extreme humidity may cause marijuana leaves to remain tissue paper thin. Take small steps in your attempts to balance your nutrient solution. It is better to under-feed your marijuana plants than to over-feed them.igh pH can prevent plants absorb essential nutrients. Extreme humidity may cause marijuana leaves to remain tissue paper thin. Take small steps in your attempts to balance your nutrient solution. It is better to under-feed your marijuana plants than to over-feed them.