Indoor Aero | LED | 36 Cream Caramel | *First Grow* | *First Journal*

[Trifid]

- There is some discoloration of the leaves that I am unable to understand. Can someone please take a look at the photos and help me diagnose and correct this, Or is this normal at this "stage"?

There is an indication of a possible micro-nutrient deficiency here (necrotic blotching)- namely Boron and possibly copper and manganese. To solve this, apply a full spectrum micro-nutrient feed with additional measures of cal/mg 100ppm periodically when changing the reservoir..

- Roughly how much longer does it look like I have till harvest from the looks of the photos? I need to figure this out so I can know when to start the flush.

It's still very early.. Your pictures indicate that the plants are still in early flowering. Over the next six weeks, as the clusters develop and swell, the internodal space will become occupied with floral density to form colas.

- EC is 1.4-1.6, is this ok, or no?


Your growing parameters are fine - although i'd agree with you regarding stabilizing the ambient temperature. Your EC and pH are in the optimum range for hydro-culture. How frequently are you changing/topping your reservoir? Are you adjusting the pH of your irrigation source?

 

[DubV]

Not a expert at all on hydro buddy but that looks like a serious cal/mag issue that is a common occurence with led grows. I am would say some of your plants are in lockout at this point. Have you been supplementing with cal/mag? I start mine at week 2 at half strength and continue every other week at half strength until week 8/9. I would say you still have 3 to 4 weeks especially if that is a lockout....

 

[riz]

Hi mate, the room looks lovely but they don't look ready to flush yet, some strains do go longer than advertised by the banks, take the days the banks tell you as an early chop on a plant in soil under big hps. I have read a couple of diary's of auto's under leds in hydro and they did take longer to finish. The deficiency you are seeing looks like calcium to me but i've never done hydro so i dunno your fix for that. If i were you i'd get some photo's of the leaves under natural light and post them up for a more accurate diagnosis. if ye can't get the plant out then cut a couple of leaves off at the stem.

Your EC pen, don't back down, insist that they repair or replace, if they do it no problem then buy another one from them so you have 2 for when one breaks down and is in for repair, if they are dicks about it, buy yer next one from elsewhere and make sure they know they have lost yer business

 

[Sauce Boss]

Not a expert at all on hydro buddy but that looks like a serious cal/mag issue that is a common occurence with led grows. I am would say some of your plants are in lockout at this point. Have you been supplementing with cal/mag? I start mine at week 2 at half strength and continue every other week at half strength until week 8/9. I would say you still have 3 to 4 weeks especially if that is a lockout....

Would Epson Salt help? I don't have any hydro stores anywhere near me to be able to just go pick up a bottle. I would have to order it online and have it shipped. Any particular brand that has the best value?

 

[Halfbloodprince]

I would knock the ph up to 6.2-6.4 or so. My leaves are doing the same thing. Not sure what it is and nobody could help me out with it. But I did start to cut the discolored leaves off. But now there are so many I said forget about it, but the one with the most discolored leaves is the best plant so I guess I can't complain.

 

[riz]

epsom salts just give magnesium and sulfur they don't have calcium but you should get calcium from your bloom nutes or other additives.

Have you seen the chart that shows what nutrients are available for the plants at what PH? if not then someone will post it for ye i got the one for soil or i'd post it.

 

[DubV]

Hey buddy if it is cal/mag it may help a little but my experience once it gets to this point you need to add a cal/mag supplement to get it out of lock or more leaves will die and fall off. Usually it shows in the lower older leaves first and works its way up as it gets worse. I would definitely recommend cal/mag and biomarine or something like this from general organics. Black diamond may help also but it tends to jack up ph when I use it. I am only familiar with general organics products because they have worked the best for me and I feel comfortable with them as quality product...

 

[riz]

shows both

 

[Trifid]

Go full spectrum with the micro supplement. Looks like you have a Boron and Manganese deficiency there

 

[cereal killer]

Im not good at picking deficiencies, though with what you have on hand I know how I would go about fixing it. There is an obvious problem with nutrients, be it lockout or deficiencies, it doesnt really matter....

First thing I would dump the rez and run it with pure water for an hr or so....

In your first post you mentioned having GH micro and bloom... I would dump the fancy feeding program, and revert to a half strenght Lucas formula which is 8ml micro and 12ml bloom per 10L. Hopefully your pen is testing PH correctly, ph to 6 and set her off again. If you have some calmag handy 1ml per litre wouldnt go astray. I have no AF history, so check that a half strenght Lucas with calmag is about right, from what I understand they should be up to it. Lucas formula is pretty bulletproof, has everything in there they need, and as basic as it sounds is rock solid. I wouldnt be chasing deficiencies around in a system like that, I would run the Lucas, though do another change in 3 days or so incase they strip the nutes they are short on straight away.

And as far as time left, they still look like they have a bit to go....

EDIT : I am suggesting the Lucas because it is solid, but also because without your pen working dumping a dose of micronutrients into the rez may send your ppm high and give you further over fert burns... its best not to have other symptoms to confuse the situation.