Help!Top of plant problems!

requiredfield87

New Member
White Widow Auto 9 weeks old
California lightworks SolarExtreme500 400w 19on/5off
15-18inches from light
Temp 74-76 (Inkbird)
Hum. 54-56% (Inkbird)
HP Promix, 3 gal pot
Currently feeding flower nutes (15-6-30) once weekly
Adding Cal/Mag Plus (2-0-0) through veg and flower
Water PH 6.5
Gets routine flushing

What started out as a presumed Cal/Mag problem is still haunting us on our 2nd grow (First grow not so awesome) looked great until about 1.5 weeks ago, started with the rust spots on the upper/new growth leaves. It was due for a flush, we flushed the PH was 5.8, fed nutes w/ cal/mag and the rust spots continued now effecting the sugar leaves. Maybe nute burn/PH to low, so did emergency flush four days later. Fed only Cal/Mag.
To much Cal?
PH prob? HELP!!! We have 3 more in veg, and 3 seedlings, so in it to win it with this Pro Mix for now.20200628_082753.jpg20200628_082925.jpg20200628_082936.jpg
 
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