Leaves are yellow, some are brown! LOOKS BAD

I have 4 plants under 2x 600W HPS bulbs. I put the plants under 12/12 on October 14th and transitioned the nutes (half grow half bloom). I am a new grower and probably messed up somewhere and gave them nute burn. A week after I lowered the ppm of the nutes and gave full bloom. The problem only persists in two of the plants (Tangerine Dream and LSD). I am unsure exactly what it is but think maybe it's because I need to still give them the grow nutes or maybe because the ppm is too high (I don't think so its around 900ppm).

I posted a lot of pictures, any help will be much appreciated

Thank You

You're looking at severe nutrient burn. Plain and simple. You really burned the fuck out of them.

I'd say flush now.

+1 you need to flush with Ph water. Might take a few days for the full damage to show but new growth should be ok. Back off on the nutes

should I continue with the FloraNova bloom or go back to the floranova grow? and it's hydroponics forgot to mention.

How do I flush with hydro?

Also, I have a clearex solution. Should I use it?

kombatic said:

should I continue with the FloraNova bloom or go back to the floranova grow? and it's hydroponics forgot to mention.

How do I flush with hydro?

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Ahem... You make me a little uneasy when you ask questions like that.

What kind of reservoir system are you using, and what is your weekly water change regimen like?

A flush in hydro simply means dumping your old res, running clean water through your system, and replacing with new solution in the res.

Do this and give it FloraNova Bloom in the appropriate concentration. But look here, if you're using Flora Nova, are you supplementing with Liquid Koolbloom and floralicious plus?

Look at this chart:

http://www.generalhydroponics.com/genhydro_US/feeding_charts/GH_KeepItSimple_Recirculating.pdf

I have 4 5gallon bubble buckets which I change every week.

I am not using any supplements but I was given samples of open sesame, beastie bloomz and cha ching.

Should I buy the supplements (Koolbloom and floalicious plus), are they worth it?

Also when you say run clean water through the system do you mean let it run in ph water without nutes? I always use RO water

Lastly, I also have clearex salt leaching solution. Should I use it? How exactly do I use it? Should i use it with nutes?

I understand I seem like a complete newb but I am a beginner and trying to learn

Thank you, Your help is much appreciated

kombatic said:

I have 4 5gallon bubble buckets which I change every week.

I am not using any supplements but I was given samples of open sesame, beastie bloomz and cha ching.

Should I buy the supplements (Koolbloom and floalicious plus), are they worth it?

Also when you say run clean water through the system do you mean let it run in ph water without nutes? I always use RO water

Lastly, I also have clearex salt leaching solution. Should I use it? How exactly do I use it? Should i use it with nutes?

I understand I seem like a complete newb but I am a beginner and trying to learn

Thank you, Your help is much appreciated

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I've had great results following that GH chart with the recommended ratios of Floralicious plus and Liquid Koolbloom. You can, of course, mix and match brands, but at the beginning stage, when you're still learning and understanding, best to keep it in one brand family and follow the feed chart closely.

Yes, ph balanced water without nutes. RO is best... but again, it points to a calmag deficiency because the RO strips the water of all traces... including beneficial trace minerals like calcium, magnesium, and iron. Bubblers and pumps will deplete your RO even further. Calmag is important.

I normally steer clear of Kleerex and stuff like that. Just gently run your cycle with clean RO ph balanced water to flush.

It's okay. I was a noob once. Just log your grow time and you'll develop your own techniques... before you know it, you'll be advising a noob yourself.

lordjin said:

I've had great results following that GH chart with the recommended ratios of Floralicious plus and Liquid Koolbloom. You can, of course, mix and match brands, but at the beginning stage, when you're still learning and understanding, best to keep it in one brand family and follow the feed chart closely.

Yes, ph balanced water without nutes. RO is best... but again, it points to a calmag deficiency because the RO strips the water of all traces... including beneficial trace minerals like calcium, magnesium, and iron. Bubblers and pumps will deplete your RO even further. Calmag is important.

I normally steer clear of Kleerex and stuff like that. Just gently run your cycle with clean RO ph balanced water to flush.

It's okay. I was a noob once. Just log your grow time and you'll develop your own techniques... before you know it, you'll be advising a noob yourself.

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Which pH is best? my book says 5.2 - 6.3 but that's a wide range

and how long should I run the water with no nutes for?

won't the plants die without nutes?

and what do I do about the calmag defficiency

kombatic said:

Which pH is best? my book says 5.2 - 6.3 but that's a wide range

and how long should I run the water with no nutes for?

won't the plants die without nutes?

and what do I do about the calmag defficiency

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5.2 to 6.3? I'll agree with that. Which is best? Stable. That's what's best. If you can get it anywhere within that range and you're stable, it's good. 5.5 - 5.8 is ideal imo.

The plants won't die without nutes as you'll just be running the water for about a couple of hours. I trust you have a healthy amount of bubbles in your res? Let the bubble action stimulate a gentle flush. It might not be a bad idea to have several extra gallons of ro ready so that you can flush for 45 minutes, dump, and repeat process for another 45 minutes with fresh water. The plants are really strong, and flushing generally shouldn't shock them if you do it with clean, cool, ph balanced, ro water. When I flush, I run my sprayers and chiller line pump for thirty minutes, but I have hyped up circulation. For dwc buckets, you'll have to take a little extra time and care to flush it out.

After you've done the flush, re-introduce a fresh mixture of nutes at a reduced concentration. Back off on the nute ppm and make a little room for Calmag. Start gentle with 1ml per gallon and see how they do. If you see an improvement and there is no more new burn, then gradually increase your ppm.

Thank you very much. I will go to the hydro store tomorrow buy Calmag, Floralicious Plus, and Liquid Kool Bloom. The chart you posted says that I should introduce the Floralicious from the beginning of growth. Is it ok to just start giving it to them now?

kombatic said:

Thank you very much. I will go to the hydro store tomorrow buy Calmag, Floralicious Plus, and Liquid Kool Bloom. The chart you posted says that I should introduce the Floralicious from the beginning of growth. Is it ok to just start giving it to them now?

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Yes, it should be fine. Remember to reduce the ppm drastically from what you had it before... even with all that stuff plus calmag. Just mix the GH ingredients per the chart in the half full jar of ro like I said. You'll be mixing the amount for the overall amount of gallons you'll be nuting as the chart instructs to the letter. The key here is NOT to pour it all into your waiting buckets, but gradually pour that into your bucket water to a gentle ppm, leaving a nice 50-100ppm cushion for the calmag. If you have left over, which you should, store in a cool dark place for later use. Then add a very light dose of calmag, like 1ml per gallon. Remember, after everything is added, it should be significantly less than the 900ppm that caused this. Try 650-700ppm... And go from there.

Remember, the goal here is to give them less actual dissolved solids, but a more complete balance of nutrients in those reduced solids.

Good luck.

its hydroponic you say? how often do you clear out the reservoir? what i noticed was there was a salt-type buildup on the walls, when you add water + ferts into the reservoir, all these salts/minerals/elements/formerly dried up nutrients, also mix into the water, making it toxic, and it can change the pH if your not careful.

for those burned plants, pure water for a week or 2 to make sure the necrosis doesnt continue, then start again, weak.
if the other ones are fine, id cut back a lil just to be on the safe side

nick17gar said:

its hydroponic you say? how often do you clear out the reservoir? what i noticed was there was a salt-type buildup on the walls, when you add water + ferts into the reservoir, all these salts/minerals/elements/formerly dried up nutrients, also mix into the water, making it toxic, and it can change the pH if your not careful.

for those burned plants, pure water for a week or 2 to make sure the necrosis doesnt continue, then start again, weak.
if the other ones are fine, id cut back a lil just to be on the safe side

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How about we split the difference and he does it for a few days? I think a week or 2 might be a little long. I was thinking more like hours. But I might be on a more accelerated time line in my head because of my hyper feed system. Still, I think he's at too crucial a period in the plant's flowering cycle to be messing with days on end with nothing but water. Could impact potency if he does that. And a week or two of nothing but water will surely stunt the buds as they will draw from the leaves prematurely as their only source of nutrient. Confusing the plant by giving it a prolonged but temporary flush and then returning abruptly to nutes could also shock it in other ways. Not worth the risk imo. I still say as thorough a flush as possible in the shortest time possible.

yea 2 weeks is probably long for hydro with no nutes.(probably said that cuz im doing soil now and 2 weeks aint a big deal) really, you just need to clean out the reservoir well, and go weak on nutrients (always), let them recuperate. check pH, water temp, air temp, and everything often.

after doing hydro and soil grows, i can say this confidently: hydro is a full-time job. you get paid more in the end, but theres a lot more work involved.

lordjin said:

Yes, it should be fine. Remember to reduce the ppm drastically from what you had it before... even with all that stuff plus calmag. Just mix the GH ingredients per the chart in the half full jar of ro like I said. You'll be mixing the amount for the overall amount of gallons you'll be nuting as the chart instructs to the letter. The key here is NOT to pour it all into your waiting buckets, but gradually pour that into your bucket water to a gentle ppm, leaving a nice 50-100ppm cushion for the calmag. If you have left over, which you should, store in a cool dark place for later use. Then add a very light dose of calmag, like 1ml per gallon. Remember, after everything is added, it should be significantly less than the 900ppm that caused this. Try 650-700ppm... And go from there.

Remember, the goal here is to give them less actual dissolved solids, but a more complete balance of nutrients in those reduced solids.

Good luck.

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what do you mean half full jar? I usually fill up about 3.5Gallons in a 5gallon bucket. I have no way of measuring how much exactly but I eye ball it and then use my ppm meter

kombatic said:

what do you mean half full jar? I usually fill up about 3.5Gallons in a 5gallon bucket. I have no way of measuring how much exactly but I eye ball it and then use my ppm meter

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See, there's your problem right there. You have to know exactly how much water you're working with at all times. Get a gallon empty water bottle and measure out exactly three or four gallons in your bucket. Mark the level with a permament sharpy marker and work with that always.

Mix the nutrient in the half jar of RO water for however many gallons you've figured your combined buckets to be. Pour the nutrient jar slowly into your waiting water buckets to desired ppm. Soil growing isn't an exact science... Hydro absolutely is...

ok measure out 3 gallons and pour it in the 5gal bucket or whatever, get a sharpie, mark a line and write 3 next to it,
then do it again with 4 gallons

then afterwards, when you wanna add water, you can see quickly how much your adding

you dont have to be precise, but pretty damn close helps a lot. i have a calendar that i mark when i add nutes, and what nutes, i have measuring cups, measuring spoon things, etc... you want them to be high quality, your work has to be high quality.

will 3 gallons last a flower plant a week? or should I change nutes like every 5-6 days?

I just started the flush with calmg. the guy at the hydro store said I should flush for 12-24 hours. Is this ok?

kombatic said:

I just started the flush with calmg. the guy at the hydro store said I should flush for 12-24 hours. Is this ok?

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You're flushing with calmag?