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Advice needed

Mrme

New Member
Thanks bud. Old grower using green haze a,b cal mag little bit of pk. It’s sitting about 1.4 ec. Under spectrum king 602
 

Chris Scorpio

Member of the Month: July 2018
No clue of those nutes, so can't help there
Full strength calmag?

What water, tap or RO, if tap what's the ec/ppm

How's yer water look, something is outs wack for sure, any goopies or chunkies, water temp , good bubbles

pH should be lower than 6.0 usually
 

Growingasmile

Well-Known Member
Hello there anyone have any ideas what this could be? Running undercurrent system, ph 5.7 to 6.3 feed at 1.4. Under high powered led at first I thought it was light stress but now not so sure. Ph keeps dropping quickly
From my initial glance I would assume too little nitrogen or too much, when did you last feed and how much, also are you watching ph. the whiter leafs look a bit like zinc deficiency to me too but I need more pics and info
 

Mrme

New Member
Using tap water loads of air in the pots all the time water temps between 18 and 19. Not feed any nitrogen other than eats in the a and b feed. Doing nothing different to normal other than changed to led lights and closed loop system with added co2. Co2 sitting 850/1200 lights on. Ph I try keep 5.8 to 6.0. It has done a sudden drop a couple of times all way down to 4.9 bou corrected it as soon as seen it so for no more than 12/18 hours
 

Mrme

New Member
From my initial glance I would assume too little nitrogen or too much, when did you last feed and how much, also are you watching ph. the whiter leafs look a bit like zinc deficiency to me too but I need more pics and info
I did think zinc myself, do you think to much light?
 

Mrme

New Member
How are you checking pH? If with a pen has it been calibrated recently?
I have a blue lab wall mounted one that I calibrate often, just took another one there today calibrated both of them put them in tank and they read over 1.4 different yet when put them back in calibration liquid both read the same . Think the prob has had it as then ph just tap water that I know is about 7.8 and it read 6.2 so I have prob been running system about 7.4 for weeks FML.
 

Mrme

New Member
And thanks everyone I am new to these sites and really appreciate you guys taking time out to share advice
 

Rifleman

Member of the Month: Mar 2016 - Plant of the Month: Nov 2015
I have a blue lab wall mounted one that I calibrate often, just took another one there today calibrated both of them put them in tank and they read over 1.4 different yet when put them back in calibration liquid both read the same . Think the prob has had it as then ph just tap water that I know is about 7.8 and it read 6.2 so I have prob been running system about 7.4 for weeks FML.
If it dries, it dies. Try using a soft toothbrush and dish liquid and clean the probe. Then submerge it in the BlueLab storage solution for 24 hrs. It may calibrate true after that, if not buy new.
 

Mrme

New Member
If it dries, it dies. Try using a soft toothbrush and dish liquid and clean the probe. Then submerge it in the BlueLab storage solution for 24 hrs. It may calibrate true after that, if not buy new.
Yea I just ordered a new one and a pen one in case it happened again
 
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