Can anyone identify deficiency type in the leaf?

Thanks for the responses. Looks like I need to watch the Calcium with this guy.

twisting happens due to different rates of growth occurring due to inconsistent environment. nutes, substrate etc... So, i see it i a promix with perlite etc... soilless is easy. If you haven't been adhering to this practice, start doing so... always fertilize, always get 10-15% runoff to ensure no dry patches in substrate plus benefit of maintaining happy zone of nutes and pH. The runoff will take care of any buildup - reasearch proven and excluding outside factors like some crazy bacterial problem going on.. Unless you are trying some multiple irragation regiment per day, let it dry up top similar to how you'd wait with soil... top inch or so dries and ready for irrigation with 10-15% runoff. So, if you were doing that, i'd look into pH runoff as well as what you are putting into soil. i am not familiar with dutch nutrients A, and you are better off in future familiarizing yourself with it. This is first, because it is least damage done to do it. If pH is rocking, then i'd start crunching numbers of what you feed the plant. Use guaranateed analysis labels to calculate PPM. Could someone guess what it is and be correct, sure... but it would be lucky with missing information. These are ballpark ideas... somewhere near ~6pH. pH is as important as the resulting ratios of nutes listed below. different pH will require different ratios of nutes. N -- 120ish P -- 50ish K -- 200ish a good hydro mi should also have all your secondary and trace elements. This will depend a bit on your tap water... Ca - 100ish Mg - 80ish S - 110ish then z, fe, b, mo etc... these things should be on the label... ppm is miniscule. I have a little table showing my ppm in nearly any week of any diary... can check it out if you want. Nutrient calculators are easy to find. if w/w labels, you need to account for specific gravity as a liter of liquid varies by weight with a bunch of shit dissolved in it. could make a 10-20% error in calculations. I'd at least know what you are adding before adjusting what you add or taking advice. I don't see any blue hue in leave, but looks like P-related. Mixing of symptoms usually leads to a lockout rather than the symptoms displayed for some def. You are in soilless, so you provide everything. easy to fix. In future don't let it degradate so much... it's good to be patient and be certain before any reaction to problem, though. Stick to that irrigation practice religiously, and making adjustments will entail minor ~5% changes to concentrations used etc... Knowing what you put into a soilless grow makes it VERY easy to diagnose what is going wrong. Way less likely to run into lockout if you start at a safe place. you can find a nute mix that will work with 80-90% of plants. A few are simply picky eaters. While focusing on other traits, some craziness does happen elsewhere by accident, occasionally.