Some yellow with my leaves: pics and info

[Neptune]

This light yellowing is affecting all of my plants in soil.

The medium is a Promix HP blended with FFOF and dry amendments. I have a feeling this is lockout, or nute burn from the Promix HP, which I have heard is very hot pre-packaged. They have been vegging for about 2-5 weeks. Growth has slowed, and the yellowing is getting worse.







Anyone with any advice, let me know.
I tried flushing some of the other pots, but the promix compacted so hard due to the volume of water I was running through them, that I fear the plants will never recover. They are still heavy to lift a week after flushing, and the Promix has compacted about 2 inches... very bad.


I am blaming Promix HP at this point...
(????)

 

[Sinfuldreams]

If it due to lock out, your Ph is off.
What is the Ph of your run off?

Or it might be a N deficiency and that COULD but not nessaraly come from Lock Out.

So we go back to Ph.

Sin

 

[Neptune]

I will check that right now.

 

[Neptune]

ok, I watered a 1 gallon pot with tap water and collected some runoff:

PH 6.85 PPM 1250 (@.5 conversion, Hanna) so, EC is 2.45

My tap water is 8.5 PH and 180 PPM

 

[Nape]

I would definitly transplant them asap. If your PH is way low as well as the lack of aeration with no pearlite, no chance of the soil getting FIXED. A straight FFOF with 30% pearlite at this stage in their life would work great. 2 weeks after the transplant I would put them into flower.

 

[Nape]

ok, I watered a 1 gallon pot with tap water and collected some runoff:

PH 6.85 PPM 1250 (@.5 conversion, Hanna) so, EC is 2.45

My tap water is 8.5 PH and 180 PPM

8.5 ph is very high. Have you been correcting this after you mix your ferts? Have you fed them at all? Shoot for PH 6.2-6.5 in your mix. You need to use distilled water to test your PH. After you have watered them and or fed them, poor about a cup of distilled water through them and collect the runoff to measure.

 

[Neptune]

They do not have the luxory of being vegged or transplanted.
They are in a room that is in 12/12, there are other lights on 12/12 as well.
Neither do i have distilled water.

The PH is not 8.5, I wrote 6.85 .


I pretty sure the problem is Promix HP, So be cautious with this stuff.
My runoff should not be 1300ppm, I have never fed them yet.

 

[Sinfuldreams]

1300 is a lot for run off.

6.8 is a bit high. You need to try a lower the 8.5 frist.

I'll tell you what BOG told someone asking if they should use ProMix.. " Are you a Pro?"

IMHO you should transplant ASAP. Don't use promix and add the perlite for air and to keep the siol loose.

If that is not possible.. Take a fork or a trowl and start to slowly scrape the soil loose again. This might help it dry faster, put a fan on the soil as well.

Sounds like there is a lock out issue.

Since you are not using any Nutes in the water Use some Ph Down and shoot for 6.5 on the high end and 5.8 on the low side. But remember that is the run off Ph so try to lower the water to say 7.0ish.

I bet that ProMix is screwin the your Ph.

Anyone else got an answer for him?

But honestly transplant would be best at this point.. your roots are suffacating as well.
Sin

 

[justFrank]

i personally have never had any prob with pro mix, only thing u must remember w pro mix is that its bare and 4 MJ aeration is a must (@70-30 perlite for me)and all u get is what u put in so dont b afraid of nutes(PBG) even early on. no offense Sin but i am a longtime bog student as well and i interpreted his comment as "designer" dirt isnt necessary, and yes FF is very hot for seedlings and such but i use it for my final transplant at flowering and the stuff is great. i agree u do seem to have a ph problem. priority 1 test ph and get it @6.5 when its off all is off, was wondering do u have any lime in there? bloodmeal or some form of N? what about mag? it looks like transplant time too, try a 3-5 gal grobag at least GL bro

 

[peacereef]

immediatly flush it!

 

[Neptune]

My PH is around 7.0
MY PPM runoff is still 1200-1400 after flushing about 2 gallons of tap water through each 5 gallon planter.... during this process, the promix HP compacted hard. The plants probably have smashed roots, with little air, and hot hot


Please be aware that not all Promix blends are the same, they sell over 20 different bags of medium. Mine is PROMIX HP, and it comes with mycorhizzal, and aparently loaded with fertilizer.

The plants are on day 5 bloom, I wonder if transplanting now would help or hurt them?
I would have to tear apart their root system to break the soil loose.

 

[Neptune]

I'm going to toss this one in the backyard, start over. failure.

 

[Sinfuldreams]

I'd still try man.
Don't dump them


Sin

 

[justFrank]

hey bud, plz by no means give up. your ph is too high and losing a little root structure transplanting wont hurt too much. and bud again promix is not hot even your hp w myc has like a "7day charge" to help initial growth (hardly nothing to MJ)and the myco is just for fungi development.http://www.premierhort.com/eProMix/Horticulture/TechnicalData/pdf/TD1-PRO-MIXHP-MYCORISE.pdf .transplant add some perlite, lime, get that ph down a bit and then nutes. this is just a weed it is quite resilient good luck bro edit: didnt know those were 5 gal planters, they look much smaller in pics.