Indoor Help! Nutrient burn? (Soil w/ biobizz nutes)

[theblues88]

Hi!

Just noticed a few spots on the leaves tips...

I'm using biobizz grow, algamic and started bloom nutes last watering.

Water ph is in a good range (around 6.5)

There are other two autos in the same tent with the same nute schedule and only this one is showing this burnt leaves

Could you please help me identify what's the problem?

Pics:

Thanks

 

[hashead]

Hey man what strength feed are you giving them? people recommend 1/4 dosage for autos but I use bio grow/bloom/topmax at 1/2 strength with no problems. Doesnt look too bad tho, some PH'd water for a feed or 2 will help

 

[theblues88]

yeah man, I heard about not using full dosage. I've been using 1/4 at the beginning and now 1/2.
Thanks!!

 

[Ribbzzy]

Give a little spray with alg a mic, 1ml per half liter, just before lights off, do it once or twice, it'll stop the spread. I looks like the start of mg deficiency. I always spray now, around day 30-35. It works a treat

 

[Ribbzzy]

How big is the plant with the issue? And what are you feeding per liter, and how frequently?