2-3 weeks in bloom and leaves are dropping fast

[repobird]

[FONT=Arial, Helvetica, sans-serif][FONT=Arial, Helvetica, sans-serif]Hi. For the past few weeks in flower I have been loosing a lot of lower leaves. I am pretty sure it is lock out of some sort. I tried lowering the ph since I know maxibloom left alone for 24 hours will rise from 5.8 to like 6.4. I read that phosphor lockout starts at 6.0 so I started lowering ph feedings at 5.6. I am at 100% maxibloom now at 1.4- 1.5 ec. I am using small hempy bucket method in 3qt pots.

How long has this problem been going on?
since switch to 12/12. I am in 3rd week of bloom.

Are you growing in a PVC grow tent? (example: Hydrohut or any other non brand tents)
secret jardin tent

What system are you running? (DWC? Ebb flow? Aero? Water Farm? Flood Tables? and so on...)
hand fed coco/perlite


What STRAIN are you growing?
blue dream

What was the establishing technique? (Were the seed or clone?)
seed

What is the age of your plants?
11 weeks

How long have they been in there mixture they are in now?(coco,soiless etc..)
11 weeks

How tall are the plants?
almost 5 ft

What PHASE are the plants in? (seedling, vegetative or flower) are the plants in?
flower



What substrate/medium are you using?(Hydroton, RockWool etc.)
coco/perlite



What Nutrient's are you using?(If growing soiless)
GH Maxigro during veg
GH Bioroot during veg

GH Maxibloom during floor



How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
.1 ec RO water

currently feeding 1.4-1.5ec


How often are you feeding? (If using soiless)
every morning

How often are you giving nutrients? (If using soiless)
every morning

If flowering, when did you switch over to using Bloom nutrients?
50/50 gro/bloom the first two weeks. then switched over late second week to all maxibloom.

What order are you mixing your nutrients? (example: veg nutes 1st, bloom 2nd ect)
maxibloom then ph up


What is the TDS/EC/PPM you are using
blu lab


What is the pH of the "Tank"?
was doing 5.8/5.9 pretty much this whole time. But I know maxibloom ph rises very fast, so I started feeding at 5.6 in the hopes that phospher lockout would not occur

How often are you testing your pH/PPM/EC/TDS?
every few weeks


Are you sure your calibration is correct on your equipment?
yes

When was your last watering?
this morning

What size bulb are you using?
600 wt

How old is the bulbs you are using?
new

What is the distance to the canopy?
1 ft, but some main colas are very close now.

What is your RH Factor(Relative Humidity)?
50%

What is the canopy temperature?
85 deg f

What is the Day/Night Temp? (Include flucutaion range)


What is the current Air Flow? (cfm etc.)
200 cfm





Is the fan blowing directly at plants?
very small fan

Is your water HARD or SOFT?
soft i think

What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water?
RO[/FONT][/FONT]

 

[repobird]

photos

 

[Dave Coulier]

Repobird, you have a clear N deficiency. I doubt it seriously has anything to do with lockout. You switched away from the veg ferts too quickly in flowering. Your buds are going to be made of alot of N, so keep feeding them N for around 2/3rd of flower, then flush, taper off if you so desire. Your plant will actually use up more N during flowering than veg, so make sure to give her what she's asking for.

 

[repobird]

Thanks Dave

So maxigro is 10-5-14 and bloom is 5-15-14. So the gro has double the N. How much do you think I should add back in the mix at week 3? Are you talking about 50/50?

 

[hyposomniac]

3grow/1bloom from start to finish works better than straight bloom IME.

The units for the mixes are different to keep it at 5g/gallon (some mixes use 4 gallons, some use 5gallons). This isn't neccesarily the right strength to use, but made the math easy.

maxigro at 5g(1ts)/gal
NO3-112
NH4-20
total N-132
N-132 (4.5)
P-29 (1)
K-154 (5.3)
Cal-79
Mg-26
S-40

Maxibloom at 5g/gal
NO3-59
NH4-7
total N-66
N-66 (1)
P-86 (1.3)
K-154 (1.8)
Cal-66
Mg-46
S-53

Mixes:
3 grow/1 bloom/4gal
(i.e., 3ts. grow+1ts. bloom in 4gal water)
N-115 (2.6)
P-43 (1)
K-154 (3.58)
C-76
Mg-31
S-43

4 grow/1 bloom/5gal
N-119 (3)
P-40 (1)
K-154 (3.8)
C-76
Mg-30
S-43

2 grow/2 bloom/4gal
N-99 (1.7)
P-58 (1)
K-154 (2.7)
C-72
Mg-36
S-47

1 grow/3 bloom/4gal
N-83 (1.2)
P-72 (1)
K-154 (2.1)
C-69
Mg-41
S-50

1 grow/4 bloom/5gal
N-79 (1.05)
P-75 (1)
K-154 (2.05)
C-69
Mg-42
S-50

 

[Gubar1]

Yah thats a nitro def. for sure. Your ph levels are fine.

 

[Dave Coulier]

Thanks Dave

So maxigro is 10-5-14 and bloom is 5-15-14. So the gro has double the N. How much do you think I should add back in the mix at week 3? Are you talking about 50/50?

It looks like Hypno has already taken care of that. Thanks Hypno.

 

[repobird]

Thanks guys!

I've had great results with straight maxigro, so I will take your guys advise and bring it back in to the mixture. I think I will start at 3 part gro 1 part bloom. Thanks for the breakdown hypo

 

[MynameStitch]

normally you want to wait for the first week into flowering and still use veg nutes, the plant takes time to change over, it does not happen overnight. Next time plants go into flowering wait a week before switching over, sometimes even 2 weeks if it's sativa