Nute burn need help

Hi so ive been having some trouble with nute burn and nitrogen toxicity I tried to flush soil today and monitored ppms before and after managed to get them down from 1500 to 1300 with 4 litres of water in a 8L fabric pot but still seems very high any suggestions? any help greatly appreciated this is my first grow and rly hoping I can get this shit to harvest -.- plant is currently at week 7 switched to flower last week

using biobizz all mix as well if this helps another thing to note is the tap water I use is around 400ppm and I always ph to 6.3

wickedways05 said:

Hi so ive been having some trouble with nute burn and nitrogen toxicity I tried to flush soil today and monitored ppms before and after managed to get them down from 1500 to 1300 with 4 litres of water in a 8L fabric pot but still seems very high any suggestions? any help greatly appreciated this is my first grow and rly hoping I can get this shit to harvest -.- plant is currently at week 7 switched to flower last week

using biobizz all mix as well if this helps another thing to note is the tap water I use is around 400ppm and I always ph to 6.3

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Without pics it's impossible to tell! Also, if you're looking to 'flush', you need about 3 times the volume of water through your medium as there is soil..you only poured 4 L in..should be about 24L to properly flush.

Blitz35 said:

Without pics it's impossible to tell! Also, if you're looking to 'flush', you need about 3 times the volume of water through your medium as there is soil..you only poured 4 L in..should be about 24L to properly flush.

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thanks for the info should I flush it again tomorrow or should I wait for it to dry out abit?

what soil are you using? give more info if you want a better answer along with pics.

polishpollack said:

what soil are you using? give more info if you want a better answer along with pics.

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im using biobizz all mix and I can get some pics tomorrow

wickedways05 said:

im using biobizz all mix and I can get some pics tomorrow

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I would never advise a flush, as i never do it, and without pics to know and see what's happening, no, i won't advise a flush as to me, that's the most drastic measure one can take and more often than not, it causes more problems than solutions

heres some pics sorry about blurple

only 2 tops are rly burnt and curled up like that most of the plant looks alot better but all new growth is coming through with burnt tips but the whole plant is really dark green ( nitrogen toxicity right?)

In that 2nd pic, what i see burnt is not a top, it looks like a bottom lol. The tops seem to be showing an iron and or sulfur deficiency, slight chance it's zinc related. Either way, it's a heavier element which in general becomes locked out at either too high of a ph usually, or too much of another cation, namely calcium, magnesium, potassium or phosphorus.
Pics in natural light would help, as if those burns on the edge are just burns and nothing more..then it may be overfed with an improper ratio and thus causing a lockout. or again, ph off, but if the pics show some paling next to the burns, then it may be potassium related. Too many variables..more pics and info is needed. 400 ppm water from the tap is a concern as that in itself can cause issues with heavier elements.

I will get some better pictures in natural light when it brightens up abit, also do you suggest I get a water filter for the hard water? thanks for taking the time to help me btw

better pics, couldn't get much light into the tent cause super cloudy where I am so I used flash

With these pics, the plant seems ok. How long have those burns been on the lower leaves? It seems like a potassium deficiency, but perhaps one that existed earlier and you possibly corrected it? The 400 ppm for your tap is high for sure, and who knows what it's made up of. Ideally you don't want tap water above 300 ppm's. It can contain alot of iron and/or sodium in most cases, which will compete with elements like calcium, magnesium and potassium, in your medium. I'm not sure how effective a water filter is, i have never used one, so can't comment on them.

Blitz35 said:

With these pics, the plant seems ok. How long have those burns been on the lower leaves? It seems like a potassium deficiency, but perhaps one that existed earlier and you possibly corrected it? The 400 ppm for your tap is high for sure, and who knows what it's made up of. Ideally you don't want tap water above 300 ppm's. It can contain alot of iron and/or sodium in most cases, which will compete with elements like calcium, magnesium and potassium, in your medium. I'm not sure how effective a water filter is, i have never used one, so can't comment on them.

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Burns on the lower leaves have been there for about 2 weeks or so, but it only appears to be on 2 stems, some other leaves have died and fell off other stems low down but im assuming thats from receiving no light cause im using a cheap light (viparspectra reflector series 300w) this plant has been through a lot due to this being my first grow, i gave her a shit tonne of nitrogen early on and over watered which left the plant looking in pretty bad shape followed by fungus gnats but I managed to get rid of them. Also I believe I did have a slight cal mag deficiency and treated that but cause of the burn this plant has only been receiving phd water for the past 9-10 days

another thing I found today is if I use the outside tap instead of my bath tap I can actually get 270ppm water so I will definitely be using that from now on, one thing I wanted to ask you is do you still think there is some nitrogen toxicity cause the leaves are pretty dark green but I don't know if that is down to strain (gorilla glue)? btw thanks again for the help and info man I really appreciate it.

Blitz35 said:

With these pics, the plant seems ok. How long have those burns been on the lower leaves? It seems like a potassium deficiency, but perhaps one that existed earlier and you possibly corrected it? The 400 ppm for your tap is high for sure, and who knows what it's made up of. Ideally you don't want tap water above 300 ppm's. It can contain alot of iron and/or sodium in most cases, which will compete with elements like calcium, magnesium and potassium, in your medium. I'm not sure how effective a water filter is, i have never used one, so can't comment on them.

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Also looking at potassium deficiencies I think you are probably correct, I was thinking should I maybe switch to biobizz bloom nutes now as npk for bio-grow (what I have been feeding up to this point) is 4-3-6 and bloom is 2-7-4 so I can start feeding it some potassium without giving so much nitrogen plus its going into flower now anyways?

if you keep feeding ferts you will kill those plants in short order. Blitz is good at having people chase 10 problems and their solutions all at once. at the risk of starting another pissing contest... Blitz, you are wrong again.
Over fertilized. Period.