Please Help What is Going on?

[Carver]

What STRAIN are you growing?
Alien OG
What was the establishing technique? (Were the seed or clone?)
Clone
What is the age of your plants?
47 day flowering
What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
Flowering
What Technique are you using?
Drain to waste
What substrate/medium are you using?(Hydroton, RockWool etc.)
Canna coco
What is the Nutrient temperature?
60-68deg
What Nutrient's are you using?
House and Garden Coco A,B
What is the TDS/EC/PPM you are using?
1200ppm
What is the pH of the "Tank"?
5.8
Are you sure your calibration is correct on your equiptment?
Yes
When was your last watering?
Yesterday
When was your last feeding change? (ie. grow-bloom-micro-additional)
Today
What size bulb are you using?
600hps
What is the distance to the canopy?
18"
What is your RH Factor?
45-55
What is the canopy temperature?
65-77

started noticing some burn and want to know if this is normal for week 7 of 10. Plants are Alien OG from clone in Canna coco under three 600w HPS drain to waste. H and G coco nutes and am using Roots organic Trinity and HPK.

I used some Mighty wash for a small spider might problem around week 2. I used some green cure at about week 4 from some PM.
could all of these preventitives have stressed them the hek out?
dont know whats going on. Bud growth has been slow an they are not looking as dank as they should. I flushed around week 5 and have been using half strength nutes at about 800ppm.
PH has always been 5.8.

 

[The Architect]

You should be flushing every fourth watering to make sure you don't have salt build-up. Do you use enzymes? Do you have a Cal-Mag supplement? RO water? straight coco or cut with perlite? Air temps? CO2?

Basically looks like bad nute burn to me. Answer those questions and I can help further

 

[joe fresh]

i second the nute burn/salt build up...flush

i would also like to add that your nute temops arlow at 40-60f...should be 68-72

 

[Carver]

I have used cal mag every other week, straight coco, I use drip clean to help with the salt buildup, tap water, temps at 65 at night and 77 max when lights are on.

 

[joe fresh]

if you over feed(like at 1200 ppm) then even if you use drip clean it wont stop the nutes from burning your plants

 

[Carver]

What could be causing the slow weird bud growth. Some plants have lots of tricomes all over leaves and the more affected ones have hardly any and are not producing. Could the green cure of caused the pistils to burn? I used half strength and lights were off for 10 hours after treatment

 

[The Architect]

i second the nute burn/salt build up...flush

i would also like to add that your nute temops arlow at 40-60f...should be 68-72

Nute temps don't matter when in a medium, only the media temp would matter.

Which brings up another question, what's the temps at the roots during the day?

 

[The Architect]

if you over feed(like at 1200 ppm) then even if you use drip clean it wont stop the nutes from burning your plants

I will second that.

Also, since you don't cut with perlite, I'm sure your medium is compacting which lessens the oxygen supply to the roots, reducing growth and also makes it harder for a flush to actually rid the media of excess salts.

 

[Carver]

if you over feed(like at 1200 ppm) then even if you use drip clean it wont stop the nutes from burning your plants

Well I'm coming up to the last few weeks of flower. I usually will cut nute strength down to half and blast them with Moab(bloom additive)
Should I not stress them with the blooming powder?

 

[Carver]

I will second that.

Also, since you don't cut with perlite, I'm sure your medium is compacting which lessens the oxygen supply to the roots, reducing growth and also makes it harder for a flush to actually rid the media of excess salts.

I use air stones in my reservoir does this help? It drains very well when I feed. Hmmm

 

[The Architect]

Air stones in your res are nice but won't help the issue I brought up at all. Your only solution for that problem at the moment is 1) Start using an Enzyme product immediately and 2) feed less often, giving the medium a chance to dry out a little more

 

[The Architect]

Well I'm coming up to the last few weeks of flower. I usually will cut nute strength down to half and blast them with Moab(bloom additive)
Should I not stress them with the blooming powder?

I never suggest 100% strength nutes ever, usually 75% max. I would suggest that if you are in the last 3 weeks to only run 25-30% nutes with your bloom booster at 75% and like I said add an enzyme product.

 

[Carver]

Air stones in your res are nice but won't help the issue I brought up at all. Your only solution for that problem at the moment is 1) Start using an Enzyme product immediately and 2) feed less often, giving the medium a chance to dry out a little more

Ok, what type of enzyme do you recommend? Teas? Also I do allow the coco to dry out before feeding. I hand feed so I'm able to feed accordingly. Thank you for your help.

 

[joe fresh]

Nute temps don't matter when in a medium, only the media temp would matter.

Which brings up another question, what's the temps at the roots during the day?

wrong, nute temps make a big difference, whether it be in soil, coco, hydro...it dont make a diff, nute temps should be around 21C if growing in soil, so im guessing in coco it is about the same.

giving your plants a dose of cold water like that will shock the roots, stunt growth, and may even start root rot....


all other info you posted is correct

 

[Carver]

Edit, nute temps in res are about mid 60s and runoff temps about 65-68f. I just checked

 

[The Architect]

wrong, nute temps make a big difference, whether it be in soil, coco, hydro...it dont make a diff, nute temps should be around 21C if growing in soil, so im guessing in coco it is about the same.

giving your plants a dose of cold water like that will shock the roots, stunt growth, and may even start root rot....


all other info you posted is correct

Sorry, I agree with you but I can see how with the way I typed it, it kinda looks bad. You will definitely shock the plants by feeding that cold and not letting the solution warm up a little before watering

 

[Carver]

Nute temps don't matter when in a medium, only the media temp would matter.

Which brings up another question, what's the temps at the roots during the day?

I will check and have to get back to you on this. Just FYI the pots are on flood tables off the groud so I assume they cannot be much colder than the temp of the room right?

 

[The Architect]

Ok, what type of enzyme do you recommend? Teas? Also I do allow the coco to dry out before feeding. I hand feed so I'm able to feed accordingly. Thank you for your help.

I like Green Planet Wholesales Zyme Caps or Hygrozyme. Teas are nice for Beneficials and they are also a great thing to have in your coco to help reduce salt build up even more but don't replace Enzymes.

 

[The Architect]

I will check and have to get back to you on this. Just FYI the pots are on flood tables off the groud so I assume they cannot be much colder than the temp of the room right?

Right, if they were on the ground they might have been too cold but yeah, if they're up on tables they should be at or around ambient.

 

[Carver]

I like Green Planet Wholesales Zyme Caps or Hygrozyme. Teas are nice for Beneficials and they are also a great thing to have in your coco to help reduce salt build up even more but don't replace Enzymes.

I have heard of the hygrozyme but will it be beneficial at this point?
Will I see a difference in two or three weeks? Thanks