No-nutes nuteburn?

Germinated and planted into 10 L of potting mix, watered purified water twice a week, under 24 hr 6000k fluoro. Plants are 5-6" and being trained using LST.

Tried to diagnose myself but all sources say it's an overdose of something, however they haven't had any nutes at all, just pure water.

Symptoms: Some leaves are twisted and wrinkly looking, some 'eagle claws', and tip burning.

Any ideas anyone?

what type of soil you got there?

looks like heat stress

Hi, just a regular potting mix nothing else added. It has a mix of Peat, Fine Bark, and Pumice and apparently enough nutrients for 8 months of plant growth.

bushmang said:

looks like heat stress

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yeah I'm pretty sure it's not heat stress because they're only under CFL's , temps are fine.

check your soil PH... u might have early symptoms of a MG deficiency.. could also be salt lock from the slow release nutes... i hear lots of bad things about slow release soils... i wont use em

They look overwatered.

the wrinkels look overwatered but the tips deff nute burn whats the brand name of the soil

orrrrrr its a nitrogen difficency? dont hold me to that though lol

hey sry this has nothing to do with the thread but Im new here an need advice/an opinion.I got a phone call yesterday about a lonely sour diesel plant outside thats going to die soon due to frost an really cold weather.Long story short = I repotted the plant added some nutes but am weary because it was forced into flowering too early because of the change of seasons.Its about 2 to 3 inches tall with small but healthy looking white pistils.Is this a lost cause?Will it seed from stress?Will the buds trichomes over mature before I can harvest because of early flowering?These are some of the questions I was looking for answers/opinions on.Basically I already have a setup going in flowering phase and had room for another pot so I figured fuck it its free.Is it worth it or should I just throw it out ?

Miss MeanWeed said:

Hi, just a regular potting mix nothing else added. It has a mix of Peat, Fine Bark, and Pumice and apparently enough nutrients for 8 months of plant growth.

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So, the soil does have nutrients then... That's why there is nute burn. I only ever use plain soil/compost with seedlings as it's so easy to burn young plants. I would stop watering them so much as they are overwatered and every time you water you release nutrients from the soil for the plant to absorb which is causing the nute burn. The nute burn doesn't seem that bad so I'd probably keep the soil and just try to water less for the time being ~ until the plants are more established.

If they get further nute burn then try to get some plain soil or a low-nutrient soil.

Looks like overwatering to me.
Only water as needed.