Is this Nute Burn?

[cirog]

New to growing, finishing up my first run through with two different strains. Super Silver Haze and Cheese. Not sure of the exact genetics but the supplier I got the clones from used these names. Any ways they are in FFOF and getting the full line of nutes as well. The super silver haze seem to be handling the nutes great, but when I checked the cheese the other day the leaves had turned up and looked brown and crispy. These plants are at 45 days flowering. Any help or input would be appreciated. Thanks in advance

 

[Danny-boy777]

Hi Cirog, how much longer do you intend on flowering? as If it is near your harvest plan I would begin flushing and wait out a week, (Ph'd Water) other wise flush and re apply nutes this should get rid of any food or Nute burn issue.

Namaste

 

[cirog]

Thanks for the response DannyBoy. I was thinking of letting them go another 4 weeks. I have been watering with just straight 6.0 ph water but not "flushing" for two waterings now. With this much time remaining should I just use water the rest of the way? I checked the trichs with my 60x scope and they are all still perfectly clear. Couldnt spot even a cloudy one.

 

[Danny-boy777]

If you've got 4 weeks and have been using pure water try get the PH up a little like 6.5, and maybe feed a little more, as you have 4 weeks, start the final flush 2 weeks before harvest, and stress less,90% of the issues you get know will never look like they have left so you have to judge by growth.

One Q though, do you test the PH of your run off or your initial water?

But yeah you'll be fine.

Namaste

 

[cirog]

I was referring to the ph of the original water going in. I also do not have the most scientific method for testing it, just a color indicating test. I really appreciate the help man, I ran about twice as much water as I normally give them through. I'm gonna feed probably only one more with 1/2 strength mix and then just water them for the rest of the way. Well see in four weeks how it looks. I cut off all of the dead ends of the leaves and hope they will be healthy from here out. Alot still to learn.

 

[njjeff]

check your run-off ph. This is just as critical as to whats going in...even more so. No big deal if all you have is the solution to check with. At least you have something. Now you just have to use it properly(sp?).
I'd say your plants are burning up. If i knew my temp., and ph were good, then i would think judging from the photo's the this is nute burn.

 

[Danny-boy777]

From the look of things , regardless of what happens now at least you will get bud, But dont stress too much about your PH testing method as I still use fish tank tester much the same as yours, It is crucial to test the PH of your run off as this is the PH of the medium, You will do fine and when you start your new grow tell me I will help you all the way Dude.

I think your plan is A+ but cutting anything in flower has always scared me as I believe that cutting stop the energy going to the buds and makes it go to healing. (thats just my belief though)

I'm sure all will come right.

Namaste

 

[bobman]

Why are you giving them such a low ph'd water. A good soil should have ph buffers already. I never used ffof but i would imagine that is a good stable soil with lime already added to stabilize ph. From the looks, it looks like what i call ph burn. My advice is to give a heavy flush with tap water regardless of ph let it dry and resume feeding at a higher ph. What ph have you been feeding at? And what are you feeding them? Are you using ph down to bring your ph lower? What has probably happened is that you have been feeding a low ph for soil or on the lower end of that scale and with the salt buildup its caused your soil to become a little low for your plants liking. Personally I believe ph in soil should be of little concern and its better to keep it on the high side rather than the low side. I think when you start to artificially lower the ph of the water/food you are giving them thats when you are going to run into problems. For example in soil I would water with a ph in the mid 7's and feed with a ph in the mid to high 6's. Plants always looked great.

 

[cirog]

I was always under the assumtion that I wanted to keep my soil around a ph of 6. Is this incorrect? I never need to add pH down to my mix, but sometimes pH up to git it to a 6.0 to 6.5 reading before I fed them. I am using ff big bloom, and ff tiger bloom to feed. I will test the pH of runoff the next time I water, should be about 3 days. I will let you know, again thanks for the input.

Dannnyboy- I actually have just started some seeds from a bag of "Kush". Who knows exactly what they are but the stuff they came from was delicious. They are about 4 nodes tall at this point, and I am contemplating what to do. I am probably going to top them but have not decided yet. I still need to determine their sexes. Hopefully I will end up with a nice new strain to try out. They are currently in 16oz party cups. Going to be transplanting soon to bigger containers. I have pics in my grow diary, will be updating weekly. Hopefully by tracking this second run I will be better able to asses what works and what does not.

 

[DocLeaf]

YES. the yellowing / burnt tips suggest too much Nitrogen during the flowering phase; as the feed has shot straight to the ends. so slight over-fed.

peace

 

[bobman]

6.0 is too low for soil. I am currently growing in hempy buckets which is a passive hydro and my ph is in the low 6's. In soil i would not go below 6.5, in fact I would keep it in the 6.8 range for feeding. You say the ssh is handling the same regime fine so maybe it is just a straight burn but I really think that low ph has something to do with it. especially if you have been feeding the same regime and all of a sudden this started to appear. Your going to find strains handle things differently and even phenos of the same strains will handle stuff differently. R u using ro water or tap?

 

[cirog]

I am using tap water that I let sit for 3 days to burn off the cholorine that we have in our tap. I will try to bring the pH up to 6.5 from now on and see what happens with the results.

 

[bobman]

you must have good tap water that they do not have to add much to. my tap is shitting but it holds its ph really well. I mix half tap and half ro and it gets me right where i want it. I don't even mess with a ph meter anymore. If i were to use straight tap it would put me at 6.8 with full strength gh nutes. If i were to use straight ro it would put me in the mid to low 5's. 24 hrs is usually more than enough time for tap to burn off chlorine. I do not know anything about ff nutes you may want to read a couple of threads on them. I know with gh its good to mix and then let them sit for a day because they have buffering solutions and it will take a day to work. So if I start with 6.0 right after i mix after a day it will go to 6.3 give or take a little but thats for hempy. Its a shame your nute mix and water do not keep your ph a little higher where you do not have to adjust it. Must be a pain it the ass. You might as well go hydro or hempy it sounds like it puts it in the perfect range for them.

 

[cirog]

Well the plants seem to be putting on new growth, so not all is bad. Thanks again for the replies. The more I learn the more I need to know. Will post finished picks in time.