Brown spots on the end of leaves??? Help

So heres the low down on what I got and whats going on..
I have an Afghan kush x Northern lights in Promix as a base soil, and im using subcools supersoil mixture.
Im just about to reach 1 week into flowering under a 600 watt hps(although just put hps on yesterday, had 250 mh from veg up until 4 days flower)
Im having some brown spots form on the lower fan leaves, and some have fallen off already and they were curled up and were crusty and brown. Now recently I notices them on the higher fan leaves as well.(as shown in the last pic) I have had this issue before and have not been able to help it. I think she may be burned a little from the super soil as I just put her in that about a week and a half ago. As shown in the pics there are brown spots but they lead into the entire leaf crisping up. Also I ph my water every time, and allow the chlorine to evaporate for at least a night. Any help is greatly appreciated!! Thanks

To me that sure looks like the beginning signs of nute burn, you say you ph your water but don't tell us at what range.

I always ph my water anywhere from 6.3-6.6. So in this situation is there any way to help this? Nearly half of my container is super soil..
Thanks for the reply!!!

Not sure I can help, I'm a hydro man not soil, I'm sure someone will be able to help.

Okay, we'll thanks anyways. Btw would you mind if I asked you some questions on hydro?

Promix is a "soilless" medium ... no nutes. cn

it looks like it may be a few deficiencies
try upping the nutes a bit, if it gets worse - flush it

GanjaGuy33 said:

Okay, we'll thanks anyways. Btw would you mind if I asked you some questions on hydro?

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Be glad to help, been doing hydro for yrs now, I'm sure I can give a few hints, please feel free.

cannabineer said:

Promix is a "soilless" medium ... no nutes. cn

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I apologize I should have worded that clearer. She was in strictly promix for the 1st month. But since then ( about 2 weeks ) after applying her to my supersoil she started to show this. I cooked the soil for 2 months with promix as just the base for the super soil. She's loaded with nutes which is what makes me think I over did it. Not to mention this strain showed much less need for nutes compared to my others. And is now showing problems, as my others look ok. This is what brought me to the conclusion of burning. But I am also a noob and have only had a couple grows. Could totally be wrong just my thought, thanks everyone for you feedback!

s0lumn said:

it looks like it may be a few deficiencies
try upping the nutes a bit, if it gets worse - flush it

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This makes me nervous, as I have tried this with close to the same problems. And I think I made it worse. What types of deficiencies are you thinking? Also I will post some better pics after work, I would feel better if you saw the whole plant, and still felt the same way. Thanks so much for the input s0lumn!

DeeTee said:

Be glad to help, been doing hydro for yrs now, I'm sure I can give a few hints, please feel free.

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Awesome! Well, I have always wanted to experiment but the one thing holding me back is time. I'm sure this depends but on average how often do you test you water, or how often does it need to be tested? Say I were to leave for 5 days to a week, is this too long for that water to sit without any implications? Thanks again

I disagree with the statement to add more nutes and hope for the best. I agree with DeeTee that this is nute burn, not def.

If it wasn't happening before changing to a nuted soil, that says something right there.

I wouldn't necessarily flush, but give water for a few feedings. If you're in flowering, the plants are mature and should live it out.

If anything, if you're going to go with just water to see if the plant recovers, grab some calmag and if any spots show up in the middle of the leaves, make a 1/2 dose spray bottle of the calmag w/pHd water, and give a light foliar mist.

The burnt leaves won't recover, but letting the plants get used to the nutes by giving just water should prevent further burning.

If it does continue, then flush.

-spek

Ok I will give this a try, thank you very much for the detailed response! Greatly appreciated

Overfeeding 100%!! Flush with a very diluted nutrient solution.

GanjaGuy33 said:

Awesome! Well, I have always wanted to experiment but the one thing holding me back is time. I'm sure this depends but on average how often do you test you water, or how often does it need to be tested? Say I were to leave for 5 days to a week, is this too long for that water to sit without any implications? Thanks again

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Not sure what you're asking re: test my water, are you saying before I mix my nutes? actually I don't test my water, I test ph and ppm's after mixing my nutes, I use 2 gals at a time, feed my plants twice a day and let drain to a 5 gal bucket, once I've used up the 2 gals I test my ph before reusing it, it's always lower than I started with, I adjust back to 5.8, don't bother testing ppm's, feed my plants and once the 2 gals is used a second time I throw it away and mix a new batch, hope this makes sense.

DeeTee said:

Not sure what you're asking re: test my water, are you saying before I mix my nutes? actually I don't test my water, I test ph and ppm's after mixing my nutes, I use 2 gals at a time, feed my plants twice a day and let drain to a 5 gal bucket, once I've used up the 2 gals I test my ph before reusing it, it's always lower than I started with, I adjust back to 5.8, don't bother testing ppm's, feed my plants and once the 2 gals is used a second time I throw it away and mix a new batch, hope this makes sense.

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Makes total sense, I just need to do a little more research on the whole hydro topic. So on average how long does that 2 gals last you? Also say you were to take a trip for a week or so, is this possible or will you surely kill your plants?

Mr. Anomaly said:

Overfeeding 100%!! Flush with a very diluted nutrient solution.

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Thanks, I did this earlier today so hopefully it will help. I appreciate the input Mr. Anomaly

That is the same signs in hydro is a tell tale of hot nutrients. I would give her a fresh drink of balanced water then drop your ppm by at least 100ppm and watch them for the next week. I would not increase your ppm.

GanjaGuy33 said:

Makes total sense, I just need to do a little more research on the whole hydro topic. So on average how long does that 2 gals last you? Also say you were to take a trip for a week or so, is this possible or will you surely kill your plants?

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On average the 2 gals would last say maybe 1 to 2 weeks, not really sure, bare in mind I don't use pumps to feed, I feed as if they were regular house plants by hand, I pour in the nutes 'till pot is full and let drain out to the bucket, The grow cubes soak up some and the plant drinks some, after each 2 feedings per day ( 2 days ) that is to say 4 full feedings, an average of close to 1 gal is used up, not sure I could leave it for 1 week without plant drying out, if you were to use a pump I would have a resevoir of at least 4 gals and you should be ok for 1 week but not more, than 10 days, that's just a guess, best to try it out before you go ahead and trust it.

Here is my mix I use, this is per 4 gals, I use GH flora series, grow, micro, bloom.
for grow: 40ml micro, 60ml grow, 20ml bloom
for flower: 40ml micro, 20ml grow, 60ml bloom

Been using this mix fo some time now and have good success, 'course I adjust my ppm's after mixing, depending on plant age.

Sir.Ganga said:

That is the same signs in hydro is a tell tale of hot nutrients. I would give her a fresh drink of balanced water then drop your ppm by at least 100ppm and watch them for the next week. I would not increase your ppm.

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I have only watered with just water, earlier with some epsom salts but thats it. My ppms are at 290 with no additives. How would I go about lowering my ppms??