Cant figure this out

Carenza di calcio

phosphorus deficiency has yellowing and then chlorosis between the leave veins. try flushing your soil or grow medium out of any build up and try a 1/4-1/2 dose of your nutrients. by flushing i mean watering with 1x what the amount of medium you have. so you will need somewhere to drain it. but for a 3 gallon pot, put 3 gallons of water through the medium and let it run off. unless its organic and dry amendments. but bottled nutes especially with coco should

It is not starving. It is not a calcium issue. It is not a magnesium deficiency! It is not a pH issue. It is not hungry due to a lack of feeding. It is not a potassium issue. It is not a spider mite/thrips issue. It is burning caused by a build up of (nutrient) salts in the soil, due to, my guess, that you are not watering enough and not getting 10-15% run off each and every time you irrigate............this is essential. Every time you irrigate, you need to get water coming out of the bottom of the pot, otherwise you will get a build up of salts which will then create a toxic situation that will then cause the leaves to burn..........exactly how these pictures are showing.

Looks like a typical fox farm grow to me.

find a nutrient line geared for cannabis grown in soil and follow their instructions i would guess if you started there it might be a good place . if you only fed her once she is probably starving . pick up the pot feel the weight get to know the difference in dry weight and just watered weight . when watering in soil it is generally best to water slowly until you have runoff 10 % or so is good , let it sit a day or two it might take three even but pick the pot up everyday maybe several times a day until you know what dry weight feels like opposed to wet weight . then when dry do it again . its better almost always better tee tee dry and not too wet happy gardening

Tried to check diary, there isn't 1 seen your last question,,, calmag def was the problem this time calmag OD. 1 extreme to the other mate.. comon sense will tel you you need to be somewhere in the middle. . Good luck..

The leaves in your example are showing classic signs of magnesium deficiency. Without knowing the history of your grow, its hard to precisely determine the cause. However If I were to guess, I would say you have calcium locking out the magnesium. Here's why .... You did say that you added calmag a few times. If you add too much calcium during veg, it will lock out magnesium if used in excess. Instead, use epsom salts at 1 teaspoon per gallon during veg and switching to calmag during flower. Since we're already seeing the deficiency, STOP calmag. Start epsom salts (teaspoon per gallon) with you feeding schedule until new leaf growth shows no signs of deficiency.

Looks like some crazy shit going on with ph to me

Hi bud. Your plant is hungry for nutrients. At first glance I would guess CalMag deficiency did this. As she is flowering, she'll be hungry for other nutrients as well. Without getting too technical, occasionally feeding her isn't going to keep her happy. The soil you start in normally has enough nutrients to get her past the first 3 to 4 weeks. After that, she'll usually start showing signs of deficiencies, aka the soil is depleted of specific nutrients and/or minerals. You will need to continuously add these gradually (or repot her every 3 to 4 weeks which would be a no-go in the bloom period) as she will generally consume more as growth continues. Read the manufacturer's recommendations how much and how frequently to add to her water and she should soon be back on her feet, so to speak. You may want to start her on half-doses and see how she responds. Sometimes plants want less/more than the manufacturer recommends. It's up to you to figure that out and adjust her feeding. Hope that helps, even a little.

If you only fertilized 1 time and you are in second week on flowering your plants are in 5th 6th week, of course your plants are going to show deficiencies, first of all I would recommend you to get a TDS or EC meter to know the start point of your tap water, then you start to figure out if you need to add calmag, for the first phases you will need to get your water at 0.2ec before adding nutrients, when you start flowering you should rise it up to 0.4ec before nutrients and in mid flowering and under certain conditions/strains/lights maybe you will end going up to 0.5-0.6ec before you add any nutrient, then you can use your TDS or EC meter to guess how much you nutrients you need to add at every stage/week of the plant, in second week of flowering on soil you should aim for 1.4-1.5ec, so 0.4EC of calmag and then 1.0 to 1.1EC of nutrients. You can look a chart of EC you need to aim for the week you are in. feeding well a plant with the right amount of nutrient is an art, so start measuring things and you will get used to when and how much you need to add to your plants, if you want to avoid overfert you can do 1-0 rule, 1 with nutrients and 1 without and from there you are ready to go and test, always follow the charts of the brand of nutrients you are using at least as start point. And please, dont forget PH is important too.

It looks familiar.. there are few options: potassium deficiency or overfertilised and locked - answer yourself how you feed them. Maybe bad nutrients. next option- thrips/spider mites - try to look under leaves.