8. Earth Juice Meta-K
Earth Juice makes a wide variety of plant nutrients. Their Meta-K formula is ideal for any plants suffering from a potassium deficiency. Potassium deficiency can cause your cannabis leaves to turn white, yellow, brown or burnt in appearance with the inner leaf remaining green.
Price: $11.60 (1 quart)
Pros: Once you notice signs of potassium deficiency, you can introduce Meta-K for some help. The formula also increases drought resistance and makes it easier for the plant to absorb nutrients.
Cons: There needs to be more quality control when it comes to the packaging. Several customers have complained about being shipped bottles that were unsealed and mostly empty.
Why We Like It: Tackles potassium deficiency before its too late.