ph locking out nutes??

hazy420

Active Member
This is what I have growing on...
I have 2 mother plants (feminized Barneys Farm LSD) they are 19 days into 12/12 light schedule. I am growing in FFOF (3 parts soil, 1 part perlite) with a 600 w HPS (easy cool hood). So far my watering schedule is about every 5 days. I use rain water-ph about 6.5...
For nutes I use FF grow big 3x times during veg...after a week of 12/12 went on to use Tiger Bloom @half strength with Big Bloom (This is my third grow and have never used the BB before just TB-figured I would try it to see if it helped out or not) Ph'd the nutes/water to 6.5 (Best i could figure using the test drops). My temps are 77 degrees lights on and 67-70 lights out.
As you can see in the pictures it looks like I may an iron def. But I may be locking out nutes due to improper ph or something else, I am looking for peoples opinions on what could be going.
For right now, I flushed one of the moms today and will flush the other tomorrow morning. On the last gallon of flush water I added a teaspoon of epsom salts (It always seems my plants are a liitle Mg deficient (maybe due to the rainwater? idk) which leads to my next question...my clones seem to be Mg def too! pics included...
does anybody know something i need to know?

Thanks for checking my thread out any help is much appreciated!

Hazy's Dad
 

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Uk.Cobra

Active Member
This is what I have growing on...
I have 2 mother plants (feminized Barneys Farm LSD) they are 19 days into 12/12 light schedule. I am growing in FFOF (3 parts soil, 1 part perlite) with a 600 w HPS (easy cool hood). So far my watering schedule is about every 5 days. I use rain water-ph about 6.5...
For nutes I use FF grow big 3x times during veg...after a week of 12/12 went on to use Tiger Bloom @half strength with Big Bloom (This is my third grow and have never used the BB before just TB-figured I would try it to see if it helped out or not) Ph'd the nutes/water to 6.5 (Best i could figure using the test drops). My temps are 77 degrees lights on and 67-70 lights out.
As you can see in the pictures it looks like I may an iron def. But I may be locking out nutes due to improper ph or something else, I am looking for peoples opinions on what could be going.
For right now, I flushed one of the moms today and will flush the other tomorrow morning. On the last gallon of flush water I added a teaspoon of epsom salts (It always seems my plants are a liitle Mg deficient (maybe due to the rainwater? idk) which leads to my next question...my clones seem to be Mg def too! pics included...
does anybody know something i need to know?

Thanks for checking my thread out any help is much appreciated!

Hazy's Dad


i had the same problem with my plants it was PH lockout for me i corrected the PH it was too low for me and stopped it all but the effected leaves are not healing anymore
 

hazy420

Active Member
Thanks UK.Cobra gonna flush the other mom today...definitely gotta straighten this shit out...too far along not to
 

CLOSETGROWTH

Well-Known Member
Flushing is a good idea... Next time add a cups worth of finely granulated dolomite lime per planter(you can still do it), it will keep the ph stable throughout your grow. Also, You may wanna download the fox farms feeding schedule from there site. Might help you out some. Good luck :) Looking good!
 

Silky Shagsalot

Well-Known Member
keep in mind that ffof has nutes in it already. you have to amend your nutes to account for the additional nutes. that looks like nute burn to me.
 

jnuggs

Well-Known Member
You mentioned that it could be PH lockout.. I see that you said you adjust your PH to 6.5, but have you ever checked the PH of the run-off water? and what strength did you use the grow big during veg? I am far from being experienced, but that looks like the same kind of problem I had. I too flushed my plants, and used a bit of cal-mag+, and the problem seemed to leave. My noob opinion is it looks like magnesium deficiency. And when I say I used a bit of cal-mag+(I use R/O water..)I mean that I added 5mL per 1 gallon of water. I only do this maybe once every 3 - 4 weeks.
Anyway I hope you get this problem figured out man, best of luck and happy growing!
 
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