MAgnesium/ Nitrogen deficiency? pics

[roothekanger]

Some of the tips of the leaves are almost crispy.
I don't think its heat stress as a few of the lower leaves are experiencing slightly limey tips

Ive been watering every other day with Hesi Root Complex, Power Zyme and Supervit.

Watered 200ml every other day containing
root complex 50ml/10 litres
supervit 2 drops(1ml)/10 litres
powerzyme 10ml/10 litres.

PH is about 7.5 but my testing kit isn't that great. Need to grab a better tester

temps are 28-30C lights on and 20 lights off

Using 2 55W 6500K Pl tubes about 1.5 -2 inches away





Any advice welcome.

[abnormldood]

Firstly, you need to back off the nutes. Flush them with PH adjusted water for two waterings. 7.5 PH is too high, you want closer to 6.8. It could be locking out Nitrogen.. Maybe someone more experienced has something else to point out.

[roothekanger]

Just bought some pH down and flushed at 6.5. Will do this for the next few waters and hopefully it will clear up.

People have been saying nute burn but I've been following hesi schedule correctly and its strange it only just started a few days ago.

Fingers crossed!

[ONGrower]

see how ur leaves r curling.

thats nitrogen toxicity(the claw).i think its likely that the crispy leaves r from fert burn aswell, and not magnesium deficiany.

sometimes u cant just go by wat the directions on the bottle say. most of the time u should start them off at a 50% dose or even less, and work up to full strenth(u didnt say u were using full strenth so im only assuming)

the flushing should work for u, just back off on the nutes for a bit. i dont kno if u have an ec meter but its useful to test ur runoff water aswell. if the ec is higher than the ec of the water u've been feeding it, that generally means salt build-up.

ur plant looks pretty good otherwise. what strain is that?

[roothekanger]

Ok its been 3 days with 2 flushes and tI think shes getting worse. Normally how long would a couple of flushes take to have an effect?