Mannnn....when does the Drama stop

[JonnybeGood]

N def tends to fade the whole fan leaf yellow.
only like 2/3 of his leafs are yellow. and looks like it started on the leaf edges and progressively got worse.
just why i think its either a mag def or a lockout issue, and not a N def.

 

[OsWiZzLe]

Gentleman...

I'm growing in a Soiless mix...Ebb and Flow....Ph is 5.6-5.9

So I dont think PH is an issue here....my Fan leaves were affected first...i'm starting to notice it on some of the tips now...i gave them Veg nutes the first 2 weeks of 12/12...

Should I foliar with Sensi Cal tonight? or Epsom? dosages for the SensiCal please How long can i keep foliaring for? i just started week 4 12/12 today

 

[Guest]

ur ph should be a little higher and i use cal/mag so i dont know whats in sensi cal but more pics will help on fixing the prob.

 

[HeadyPete]

I'm gonna call in for another opinion.

 

[JonnybeGood]

im in soilless too. and i adjust my ph to 6-6.3
i think anythin below 5.8 might cause a def

 

[OsWiZzLe]

hhhhmmmm....so Flush....Add more SensiCal...Raise my PH????

Mannn....i'm confused lol I appreciate all the help guys

 

[OsWiZzLe]

I bumped up the SensiCal.....Its a Mag issue...the yellowing leaves are now curling upwards....how long will it take to notice any improvement?

 

[HeadyPete]

hhhhmmmm....so Flush....Add more SensiCal...Raise my PH????

Mannn....i'm confused lol I appreciate all the help guys

yes, yes and yes and it will take a few days to see improvement on new growth. Some of those leaves may not recover.

 

[HeadyPete]

Here's the chart: Check your ph.

 

[HeadyPete]

Is there peat in your soiless mix? Peat moss has a ph of 3.4 to 4.8. That would put the actual rootzone ph lower than the 5.8 nute solution ph.

Exactly how do you test your ph?

Proper pH for cloning
by Ed Rosenthal (08 Aug, 2005)

I have a large garden and do a lot of cloning. For the most part I use expanding peat pots. Sometimes I use coconut fiber plugs, but I don't get as much success with the coconut as the peat. What pH is proper for cloning? I have heard a lot of different suggestions.

Kaya,
Internet


The coir plugs are produced from coconut husks and are considered a renewable resource. They have a neutral pH and don't seem to affect the pH of the water. Peat plugs are produced by stripping layers or mining bogs. In the last decade ecological questions have arisen about this practice. Peat has a low, or acidic, pH. Obviously, the pH should be adjusted for the different conditions. Coir has some of the same qualities of Oasis, a foamed plastic used as starter cubes. Clones do best in both coir and the plastic cubes at a pH of 6.3.

Peat cubes lower the pH of the water so the pH should be raised to 6.4 or even 6.5. To find out exactly what pH to use, check the peat's pH. Figure out how much lower than 6.3 the peat measures. Then raise the water's pH by that amount. Finally, after watering, check the pH of the drain water. It should be about 6.3. If it's off, tinker around with the irrigation water pH, until the drain water does measure 6.3

Many people use Rockwool starter cubes for cloning. They are made from spun basalt rock. There are ecological problems related to their disposal. A lot of used rockwool winds up in dumps. Rockwool has a very high pH, especially when it's new. I found that it produced spectacularly when it was buffered in a low pH water, 5.8, for at least 12 hours before it was used. The irrigation water was adjusted to 6.1.

 

[OsWiZzLe]

Pete...thanks for all the help

I'm using Botanicare's Areation Soilless mix thats meant to be waterd 4-6 times a day...i think there might be a lil Peat in there

I measure my PH with a Hanna Digital tester that stays in the Rez....

my soilless mix calls for multiple waterings but i only water once a day....they stay moist..i use a moisture meter to watch it

 

[MynameStitch]

Dude my damn bird just erased my whole damn post! she flew on the keyboard.

Anyways people don't know this but when cannabis flowers it can and does have magniseum deficiency at the middle to tops of the plant. Also different strains can do this too. Iron deficiency can start like this too but iron def is normally a dull color yellow rather than the bright yellow color it is now; since he has no magniseum in his water since he is using Ro water because RO water has hardly no minerals in it which cannabis needs and needs to be supplimented with micro nutes. But since you are not using cal mag/sensi cal or very little of it. i would bet it's a magniseum issue; if not it's an iron. Right now as it looks it looks more like an magniseium def than anything else. Magniseum from what i have seen in different strains and certain times in flowering cannabis can transport it differentily and thus you get what you are seeing now.

Like heady has stated; you got a magnesium deficiency his advice he gave you and what others who agreed with him will help you out.
Increase the ppms of sensi cal and monitor ppms and ph few times a day. I also would not bother foliar feeding; even though it gives a quick dose it runs out quickly and does not fix the issue; i would just mix it in the res and let it fix itself there; reason why is because foliar works better in soil grows rather than hydro,because in hydro you can sometimes see results in a few hours rather than a week with soil grows.

 

[OsWiZzLe]

Stitch ....good lookin out homie

 

[MynameStitch]

Np man! Although; you should thank Heady Pete he is the one who linked me here

 

[OsWiZzLe]

here's some more pics

 

[MynameStitch]

See the 4th picture you just uploaded look at the fan leaves to the top right of the pic;that is a perfect pic when i was talking about different tones of yellows; you have an iron deficiency and a magniseum; but the pics you uploaded when the thread started those were magneisum but that 4th pic shows iron too; like I said before iron and magniseum, sometimes it's to early to tell and have to wait it out a bit to see what turn it takes before you see what it is.
What lighting are you using and how close is it to the plants?

 

[OsWiZzLe]

3 600's over a 3x6 tray...lights are about 8 inches...is it time to flush..or will the added SenSi Cal do the trick?

 

[MynameStitch]

When was the last time you flushed your system?
If it';s been a while since you flushed I would flush add new nutes and add the sensi cal. If it's kinda recent then just add the sensi cal.

To keep a healthy hydro setup normally you would want to flush every 2 weeks MAX

 

[OsWiZzLe]

I flushed 2 weeks ago...I'll flush them again tommarow....today is day 25 of flowering

 

[Guest]

Hey stitchers....

would you still answer the same if you knew that sweet contain actually 20% more magnesium than cal mag?????

It cant be iron by the way ....

the chlorosis is wrong for iron.....

iron def shows green tips and chlorotic leaf interiors.....

and since iron is immobile.... the leaves dont actually lose their green color....

they are incapable of manufacturing the leaf properly when it was made....

THats why the chlorosis is always at the tops or branches.....


IN this case it isnt.....

a few reasons why it isnt iron....