Photoperiod Burnt Tips on my lemon zkittles

[Mangos]

Hey guys, long time since I've been in the infirmary! I noticed some rouge looking leaves on my lemon zkittles about a week ago. As it seems to be getting worse I thought I better reach out to the oracles :smoking: Your help as always is much appreciated!


Problem: Burnt tips/rust like looking spots on lower fan leaves

Medium: Plagron Light Mix

Feed and supplements: (Per 1.5L)

• Sensi Bloom A 2ml
• Sensi Bloom B 4ml
• Carboload 3ml
• Overdrive 3ml
• Shogun Calmag 3ml
• Guanokalong 10ml (Weekly)

Water Source: Tap water with pH of 7.6. Once feeds have been added pH is 6.5. EC reading of feeds is 1772. pH of soil is 7.0

Strain and age: Dutch Passion Lemon Zkittles 84days (photoperiod)

Climate: Temps usually between 25oC-28oC, RH between 50%-60%. About a month back temps went mad and were in excess of 30oC.

Light used: GN Telos-0008

Additional Info: Plant has been affected for about a week, the symptoms appeared very fast. It is one of 4 plants I am growing in a 1.2x1.2x2.0m tent.

 

[Rev. Green Genes]

That leaf you broke off? is it from bottom or top? new or old?

She looks pretty healthy to me, burned tips show you found her maximum nute strength. Claw tips mean you gone too hot. If it gets worse, drop your feed PPM a little. It could just be too much N in the mix, she's early/mid flower so you might just give one round of plain water to get some residual N out. Use the opportunity to check pH, by doing a run off test. That would both verify pH (never a bad thing) and water a bit a runoff out.

 

[Waira]

...Hey Mango man! :smoking: ...... I'd say the feeds may be getting too rich, cumulatively,... seeing some tip burn, and there's a lot of green still on her, (that leaf is normal N defc. for this stage)...
.....how you testing in-pot pH? 7.0 is potential trouble territory for some micronutes (Fe, Zn mainly), though I see no sign so far on the tops,... other symptoms are pretty generic, not distinct enough to call IMO,....