Hey folks, first time grower here. Something is seriously wrong with my plant and I'm not sure what it is.
Any ideas?
At first I thought it needed nutrients so I added fertilizer and it got a little better for a while. Then I added more fertilizer and it seemed like it got worse. I was worried I had over fertilized, so I watered the plants with RO water a lot. Then they got a lot worse and stayed wet for a while, and then dried out and seemed to start doing a little better. Today I trimmed off some yellow leaves to find that the new growth still looks messed up. I don't know what to do!
Those necrotic margins make me think it's a K deficiency. I don't grow weed, but I've got a soils background and nutrient deficiencies are a secondary skill.
What kind of fertilizer did you add?
I used Neptune's Harvest fish and seaweed 2-3-1
Do you have a certificate of analysis? I tried to find one for this product but couldn't. A COA shows exactly what's in it and in how many mg/kg.
Given that it's fish/seaweed you could have a salinity/sodicity issue.