Yellowing Clones

Hey guys,

I have an issue. I have 14 clones in a prebuilt closet. All the clones were healthy going in but in a week and a half have done nothing but turn yellow.

Nutrient levels are now at 850ppm but were low (420-480ppm)

They're in a deep water culture with drippers and a fogger in the resevoir. Under a 400w hps (mh conv. bulb for veg)

Humidity is 45% RH and temp is currently 78* F but fluctuates throughout the day between 72-82* F.

The strain is Misty (http://www.cannabis-seeds.co.uk/products/278/misty.html)

The drippers run 24hours and the fogger is currently 24hours but that will soon be on timer.

They look extremely over watered....or else your humidity is way off.

850 seems a little high this early, they look a bit over watered and burned. Do you have much air running down into the rez?

Too much water, too much light, too much nutrients, your trying way to hard.

https://www.rollitup.org/view.php?pg=faq&cmd=category&id=63

These clones are now several weeks old. They have only been in this chamber for a week and a half.<br><br>Tap water here is tested at around 300-350 ppm. 420ppm is low on nutes. PH is tested and good.<br><br>It's a deep water culture. If you're unfamiliar with a DWC please read up on it. The res is heavily airated and I've grow clones on more light with younger plants before without issues, so that's not the problem. <br><br>They started looking like that on the 420ppm of nutes, thats why i bumped to 850ppm (last night).<br><br>For the first several weeks these clones were under 24 hour flourescents in a cloning chamber (combined maybe 75w on the floros)<br><br>Aye...any suggestions other than the forementioned?<br>

zep867 said:

Nutrient levels are now at 850ppm but were low (420-480ppm)

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zep867 said:

These clones are now several weeks old. They have only been in this chamber for a week and a half. Tap water here is tested at around 300-350 ppm. 420ppm is low on nutes. PH is tested and good. It's a deep water culture. If you're unfamiliar with a DWC please read up on it. The res is heavily airated and I've grow clones on more light with younger plants before without issues, so that's not the problem. They started looking like that on the 420ppm of nutes, thats why i bumped to 850ppm (last night).

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HOLY FUCK.... 850 ppm is too high! BTW.... so is 420 ppm for clones. Your clones look the way they do because you are BURNING THE SHIT OUT OF THEM with too high PPM.

Clones should get NOTHING until they are rooted and well on their way in Veg. When I clone I use RO water (which produces water around 50 PPM) and I add a couple drops of Superthrive to the water I soak the plugs in. Usually they root in 10 days and I don't start feeding them for about 2 weeks. When I do start feeding them I start with PPM around 150 to 200.

Dude, you are BURNING your plants.... no question about it.

Florida Girl said:

Usually they root in 10 days and I don't start feeding them for about 2 weeks. When I do start feeding them I start with PPM around 150 to 200.

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These were in a cloning chamber for almost 4 weeks before they were moved into this setup.

I'll cut the nutes and give it a try though.

too much nutes, and definitely too much water. cut your watering way back.. also dont let the leaves hang down and touch the ground. they will develop disease.

I don't have a RO system, so Im stuck with 350 ppm tap water.

Correct me if Im wrong but ppm is only a measure of solid particles disolved into the water. That includes more than just usable nutrients
if I'm starting on 350ppm water and the added nutrients brought ppm levels to 420, that's 70ppm or so of disolved nutrients in the water.

Im using Floranova grow which recommends 300ppm for seedlings and 600 for early development.

zep867 said:

Im using Floranova grow which recommends 300ppm for seedlings and 600 for early development.

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The problem with your tap water being 350 PPM is that you don't know WHAT the content of that 350 PPM is (unless you read your water report). It's not just about the number... it's about what is in the water that makes up that number.

I learned all about this the hard way. My tap water is 550+ PPM out of the faucet and I killed a few plants because of it. After reading my water report I found that the Sodium content alone of my tap water was 130 PPM . As a comparison... a few counties inland their tap water sodium content is 8 PPM. See where I'm going with this?

If you want your plants to recover... the bottom line is you need to not just back off the nutes.... you need to flush those plants with distilled water (get it at Walmart for like 99 cents a gallon) and let them recover with NO NUTES! Once they get back on track looking healthy you can start with the nutes... I'd start around 200 PPM and work up from there. You will still need to use distilled water.

Keep using that tap water with nutes and you will kill everything you try to grow. See hyrdo is not as forgiving as soil. You grow hydro... you gotta get that shit right.... there is just no way around it.

If you can't afford to buy distilled water or an RO machine then I'd suggest you switch to growing in soil.

Good luck

The odd part is that this is crop #2.

I used the same tap water for the last, without these problems.

I'm going to pick up the distilled water today and try that.
thank you for the input.