MemberBerry nutrient burn/deficiency

Hi, seems nitrogen toxicity to me, you have got the claw (tip of the leaves curling down), really dark and shiny leaves ect. I think you have to flush properly your plant, wait for a week and than start feeding her again gradually. Hope this will help

Nutrient uptake depends on many aspects of your invigorate. If your plants are closer to a light or you’re doing a sea of green type of grow you can use less nutrient in your solution. as an example, using the general hydro feed 10 part feed chart I use half strength solution based on the “light” feeding schedule. However if you’re farther away from lights and now packing plants in tightly you can use a stronger solution. More is not always more

It does look quote dark to me and the points of the leaves bending down are indicting N tox. I have heard really good things with Floranova Grow and Bloom from a few growers. I have yet to try it but I think if your not measuring your EC it would be best to do a bit of a flush and then start with 1/2 the bloom. The amounts your using now are a bit much so if they are the suggested amount on the bottle then Less would be good. The EC pen is a great diagnostic tool to confirm if your feeding solution concentrations. To little less growth to much and bigger problems like PH,lockout,toxicities. Also autos do not like extra strong feeds like their photoperiod counterparts, I see one of the plants is an auto. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ This site offer a great framework of EC levels to feed autos. its not set in stone but I find its great to start here and build off of it. The yellowing tips look like Potassium to me. but the flora nova line is an all in one no extras needed. I think just wait till the flush is completed and start on the bloom with the adjusted feeding strengths and it should correct its self. Also one note about flushing in soil its not the best to do as the soil can become waterlogged and compacted causing root rot. Its best to do it slowly over a period of time to avoid any other complications. I use a weed sprayer to water my soil based grows and this helps it a lot as the water comes out like a nice rain and not all at once. FYI: We will not be notified of any reply or tag [@] in the questions part of the website, if you need to reach out with other information use your DM "direct mailbox" in the bottom right hand corner of the page. it looks like a little paper airplane icon. Best Of Luck!

I'm going to agree with Chow_13 and Nugsery - you've got a nitrogen toxicity. Where I depart from Nugsery is in what to do about it. Your leaves are WAY too dark and it suggests the problem is fairly bad ... and now you're showing signs of a phosphorus deficiency in the edges of your leaves... So what I would recommend is for you to do a hard flush here. That means running 3x the pot volume of pH'd water through the pot - which, for you, would mean running 6 gallons of pH'd water through them. When they're dry, you can feed but only 1/2 strength at first and only the bloom nutes. Going forward, you can increase your bloom nutes to what you've been giving them but you might also consider adding a PK booster which will not only help with the deficiency but also serve to increase the bud size and density... Good luck!

Dark green and Shiny leaves, Leaf tips curling down. Yep that's nitrogen toxicity.

So long as your going onto your bloom formula now you will be fine. You may have done 1 week to long on the grow formula but its nothing to worry about. Also Berry strains and purple strains tend to have darker leaves.