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I'm thinking K def but it also looks like possible beginning stages of interveinal chlorosis (Mg). Looking light green anyway so my plan is to bump up to 550 ppm (3.5g/G + .5g/G es). Just making sure that sounds right.
Problem: yellowing of leaf tips, possible interveinal chlorosis
Medium/grow method: DWC- 4 G res.; pH 5.8-6.0; 450 ppm; Hydroguard; fulvic acid; kelp
Feed: and supplements used: MC (1 part) at 3.5g/G plus .5g ES - diluted to 450 ppm
water source: RODI (5-10 ppm)
Strain/age: Meph AvT - day 13
light used: Mars FC3000 - 290w
Climate: 72% RH, LST 77-79F.
Shoutout to @Waira @Mañ'O'Green
Problem: yellowing of leaf tips, possible interveinal chlorosis
Medium/grow method: DWC- 4 G res.; pH 5.8-6.0; 450 ppm; Hydroguard; fulvic acid; kelp
Feed: and supplements used: MC (1 part) at 3.5g/G plus .5g ES - diluted to 450 ppm
water source: RODI (5-10 ppm)
Strain/age: Meph AvT - day 13
light used: Mars FC3000 - 290w
Climate: 72% RH, LST 77-79F.
Shoutout to @Waira @Mañ'O'Green
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