Do i definitely need to flush?

[greenspiritz]

I've run into a problem.

I've been feeding with every watering with 400 - 550ppm and a ph of 6.4 - 6.8

They looked a little ill today so i did a test of the run off, they are 21 days into flowering.

The results was 1000ppm on a (500ppm scale) so 2.0EC! and PH was 6.1 after i flushed with 400ppm nutrient and PH 6.2.

They are in 5.7 litre pots

Could i get away with watering these with plain water for a few watering at PH 7 to unlock the nutrient, or do i definitely need to flush?

I would say this is the beginning stage of lock up and i thought i might get away with feeding them just water with a higher PH because there is a hell of a lot of pots to flush if this is the case


Thanks for looking in

There is no nutrient burn only some mild clawing on the sugar leafs, but nearly all the petioles have gone purple on 3 different strains and some mid leaf yellowing

 

[greenspiritz]

I have been using:


Growth Technology Silicon (at full strength in week 2)
Canna Boost (at Full strength throughout)
Buddha Tree Flower Burst (at half strength (PK) product)
Ionic Cal/mag (at Half strength)

And PH Down

After adding the additives above i then raised my PPM between 400 - 550 depending what they looked like with Ionic Grow soil nutrient

 

[greenspiritz]

any ideas??

Should i just continue with just ph corrected water with no nutrients?

 

[greenspiritz]

Im thinking too much PK and silicon might be in the soil, im not sure some help would be great!

 

[f-e]

That's an odd feeding method.

500 in and 1000 out, means it's too strong going in, or there isn't enough run-off with each watering.

Again, that is an unusual feeding method. I can't imagine it's a balanced diet at all. So you could have odd build up's such as Mg. You have Mg in your soil, your grow food, your cal/mag and perhaps the pk boost. All that Mg could lead to a wet medium that becomes acidic. Also your putting in silicone, in soil. I thought it a hydro thing, but it does effect pH somehow. Is it down? you're probably loading up with it. I would stop that complicated regime and buy some ionic bloom. Or you could use grow, and add 10% pk by volume. So if you use 20ml of feed, add 2ml of something like pk 13/14 to make a higher N bloom food. Wait till week 4 or 5 before playing with further pk boosts. Or just don't. And unless your plants ask, don't use cal/mag. Shelf the silicone for pH adjustments. Only the gods know what to do with canna boost. Presuming your not under leds, an ec of maybe 1.3 in, and enough run-off to produce under 1.8 out, should be fine. But it's only a starting point. It could be too much, if your compost is still fine. Read the bottle first though, to corroborate my story

 

[hyposomniac]

You mentioned 'Ionic grow soil nutrient,' is that something else you're using?
that Buddha tree stuff looks like more than a pk boost, maybe a pgr of some kind, and the canna boost is that as well.

 

[greenspiritz]

I use ionic grow up to the 3rd week for the nitrogen, because i keep having problems with nitrogen mid flower. As for the Buddha flower burst it says to add for the first 3 weeks in flower, then the plan was just moving on to ionic bloom for week 4 then on week 5 add the ionic pk boost and 1 shot of cal/mag for 1 week then week 6 add ionic bloom, cannaboost and finish the course like that.

I dont understand how ive got a reading of 1000ppm when ive only been feeding 400 - 500ppm in biobizz light mix and had my ph between 6.3 - 6.8.


Anyway i've flushed them all, they starting to look really sick. But the others (Grandaddypurple) and (Critical 2.0) look ok although they've had the same feeds.

What do i do next?

I have flushed them with pure plain none ph'd water around 7. The runoff PH is now at 6.6 and the run off PPM is 200. So basically a blank canvas, i know this isn't good and they will need nutreint asap

Do i flush a feed over the plain water flush with Ionic Bloom at 450PPM and PH6.6? or do i let her dry out then feed to help her use up locked up nutrient in the plant itself? and then start the pk boost into the 5th week?

I also have Dolomite Lime very fine grade, should i add 1 teaspoon to the top of the soil and water in to help buffer the PH after the excess flush?

Hope you guys can help me, i really need this for Christmas

 

[greenspiritz]

Think i might go back to hydro again, i just cant dial in on soil. I either underfeed or over feed, but i never feed in excess EC or ppms? maybe i should just plain water them more often?

But i thought 2 light feeds a week would be ok

 

[greenspiritz]

These are my feeding habits

Water with 450ppm PH between 6.3 - 6.8ph

Then i wait for about 3 days for the pot to get really light

and then i repeat again either 400 or 500ppm



Both my PPM & PH meter have been collaborated about 3 times during this grow and they are perfect so i have no worries about the test equipment

 

[greenspiritz]

Some of the Grand daddy purple are doing it now, showing up overall yellowing starting with the big leaves and purple petioles. Again i just tested the run off, exactly the same as the others just showed a little later

Run Off 900+PPM
PH 6

What the hell do i do guys? Please help

Edit: I flushed plain water with PH 7.5 and 200PPM so i'm presuming the PH in the soil is actually lower and locking out a lot of things?

 

[greenspiritz]

Please please please help it's day 26 of flower

 

[pongster]

hello brother, i can understand your desperation,
but pictures help a lot... 'a little ill' gives too many interpretations.

mind posting about the composition of your ferts as well? my guess is that you used too much brawndo on soil;

by not looking at the symptoms, and just reading what you wrote; my best bet to try reaching the harvest is to transplant to a bigger pot. with bagged soil, and that new volume of soil will be the one giving you harvest. Be sure to use an "all mix", not a light mix or whatever resembles a light mix.

when transplanting, wet a little the new soil; but after transplant just accomodate the soil, don't water again. let the roots reach the new mix by themselves and forget about their old home.

throwing more stuff to that damaged soil won't do any good, i've been there...

i hope everything turns out for the best,
best regards,

 

[greenspiritz]

Thanks for the reply.


I think i know whats gone wrong, like you said a bit too much of everything.

So...

I've just started to flush them all, it's going to take a good few hours lol

So i've just flushed 3 pots and now the run off is 190ppm and ph between 6.5 - 6.8. My water has 170ppm.

What should i do once i have flushed them all? I'm at the start or week 5 and the nutrients i have are:

IONIC SOIL BLOOM
IONIC PK 13/14
Canna boost
Dolomite lime

Should i feed them with half strength of those 3 after this flush?

And what PPM And PH should i have the solution, they are small plants probably about 1.5 foot tall some are smaller.

I will try and get some pictures up, but it looks like lockout to me, the signs they are showing are, Calcium, Magnesium and Phosphorus.

Run off was ph 5.9 and PPM 1000

 

[greenspiritz]

I also have IONIC CAL/MAG. Should i add this since i have flushed it all out. it says 1ml a litre for deficiency and 2ml a litre for health?

 

[greenspiritz]

What i think has happened, is..

I've been feeding IONIC cal/mag too often, and the magnesium has built up in the soil in excess, in turn causing a lock out of calcium and then phosphorous & magnesium because of the increasing ppm's in the soil and then causing a drop in the PH because of salt build up.

My plan now is, I'm flushing all the pots to a PPM of 190 and a PH between 6.5 - 6.8 run off. And lowering my light levels for the next few days while they dry out. Then adding

IONIC SOIL BLOOM at half strength
PK 13/14 at full strength for 1 dose only for the remaining time up to harvest, maybe 1 half strength dose late in week 6 and then finishing them up to 9 weeks.

I'm not sure how long the GDP will go because it says any where between 8 - 14 weeks? which is really strange information since its mainly indica, so i'm thinking i might have a 9 week pheno so this leaves me 5 weeks to having this problem sorted, i'm hoping she'll recover in the next 7 days and then continue to finish up.

I will get some pictures, i think i just caught it just in time because it's very mild at the moment but i'm expecting it to worsen before it gets better because of the over watered soil and very little food in the soil, i may foliar spray them lightly with some formulex and reduce the lighting for the next 3 days while they dry out for the next feed?

Whats peoples thoughts? This is a chemical grow not organic so not to confuse anyone with the flushing ect.

I also cannot pot them up either, i don't think they grow much roots into this stage and i don't have bigger pots or soil to accommodate that.

I'm hoping that a simply a good flush with reduce lighting and restoring ph and nutrient balance will help these ladies to their finish line

 

[greenspiritz]

Finally managed to get some pictures of whats going on

Run off 570PPM
Run off 6.1 - 6.3PH
Temps 18 - 28
Humidity 45 - 55%

Ok, this has been there start. I planted the cuttings into 5.7 litre pots in Biobizz light mix, I didn't start feeding them until around 10 days after planting with 450ppm PH6.3 then every few days i would feed them again with 550ppm ph 6.5 or 6.8.

I used Buddha Tree Flower burst at half recommended dose for the first 2 weeks of flower then full strength in the 3rd week of flower and stopped using it

Buddha Tree Flower Burst
N 2.9%
P 10%
K 8%
Sulfer 5.48%
Boron 0.25%

Ionic Soil Grow
N 1.8%
P 1.4%
K 2.6%

Ionic Cal/mag
N 3.8%
P 0%
K 0%
Calcium 5.6%
Magnesium 4.01%



I was also feeding 20ml of Canna boost accelerator each watering

I also used Ionic CAL/MAG at 20% the recommended dose in week 1 and 2 with every watering then week 3 i used CAL/MAG at 50% strength as directed for vigour 1ml per per 2 litres

I also used Growth technology - Silicon at 30% of full strength dose
in week 2 then week 3 at full strength.

I also used Ionic Soil grow for the first 3 week of flower which i used last to top the tank up between 450 - 550ppm

I always set my PH between 6.3 - 6.8ph

Then week 4 i seen problems so i did a flush, and the run off was 900-1000ppm and ph 5.9 - 6.1

So week 5 i have done a flush with 140ppm plain old water and ph7 and stopped flushing until the run off was 190ppm and ph 6.5, then reintroduced a nutrient solution of:

Ionic PK13/14 at 50% the max dose
and then topped off with Ionic Soil Bloom to 500ppm and PH 7

The run off now is at 570ppm and ph 6.2 and still having worse problems

Here's some pictures any ideas? Is it PH lockout still? or not enough now?

I would water ever 3 days or so with the same solutions so they only had 1 water feed and would wait for the pot to become light

I'm stumped guys im so tempted to just throw up the PPMs but i know that'll make it worse, i really need help im in day 31 of flower.

Thanks



Edit: I have Dolomite Lime? Will this fix the low end PH and help stabilise the ph up near 6.5 - 6.8? I think i now have a ph instability issue?

 

[greenspiritz]

Pictures

 

[greenspiritz]

Pictures

 

[Treevly]

I was afraid to open this thread.

 

[Mr. Greengenes]

Looking at your pictures, I'd say just relax, the problem is not too bad. If I was you, I'd just lay off all the nutrients and concentrate on watering the rest of the run. The plants are looking fairly big for their containers, so you can stop worrying about over watering. It won't happen. In fact, I'd put some bug runoff trays and let them sit in enough that it takes a few hours for them to re absorb it. That way you'll get maximum yield. Remember, other than the main factor; genetics, it's water that limits yield, not nutrients.

Nutrient salts can concentrate when the soilmix is allowed to dry out too much, that's probably where you were seeing the problem. It's hard to keep up with the rapidly changing water requirements of cannabis, it's one of the 'high kung fu's' of growing!