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Seedlings going yellow
grimlymanstarted grow question 4 years ago
Could yellowing of leaves on seedlings be from too much fertilizer ( liquid fish, compost,seaweed type.)
I wouldn't suspect iron deficiency as it is new premium potting mix that they are planted in.
I did feed with about half strength liquid feet about 5 days ago.
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HeavyHittahanswered grow question 4 years ago
Yes I would say it's a little bit of iron defiency . I add calmag plus which contains iron as I used to have this problem but it's stopped now .
Also what leaf blower said was true . You may already have iron in your soil but if it's not at the correct PH the plant won't absorb it. So checking PH is the first thing you should do . If that's fine maybe add a little more calmag plus if it contains iron .
Leafblower420answered grow question 4 years ago
Almost every problem can be tied to ph. Every time that happens in my hydro setup, ph is running higher than it should be. I would start with putting the PH pen in the dirt and check it at different spots.
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