Iron Deficiency?

[sweeper91]

Hi there, using Jack's 3-2-1, pH is 5.5-6.5 with EC in line but I keep seeing what appears to be a slight iron deficiency. Any thoughts? I can up Epsom salts and see if that helps

[9fingerleafs]

Pictures are not working. Jacks should have enough calcium. What are you measuring ph with? What about the temp of your grow?

[sweeper91]

using bluelap ph pen, temp of grow room 65-83

[9fingerleafs]

You growing in coco? It’s common to have slightly yellow growth tips. Specially when the plant is growing fast. Takes a day or two to get the leaves filled with nutrients and chlorophyll

[sweeper91]

rdwc. understand about new growth being yellow, but i'm seeing other issues (leaf curling, holes) that suggest a nute issue to me. i'm gonna calibrate my ph pen and recheck, thank you for your help

[9fingerleafs]

Ohh I see. Less likely to happen in hydro. In soil everything is slower. I grow in coco. I don’t get yellowing in the new growth. I use what you know as jacks (called peters professional in my country) made by icl. Always contain enough iron. What ec you using? I think it’s more likely other nutrients are locking iron out