Calcium/Magnessium deficiency?

Dear responders, you truly are a wonderful community. So helpful, I did not expect that. Couple of words of explanation: the medium is soil, this is week 7 (1st week of flowering), I use only biotabs and boom boom spray (also I have used leaf coat as I have suspected there be some pests, just in case). I'll happily agree with your opinions that this looks more like overfertilization than deficiency. I don't PH the water because BioTabs said the soil life will regulate it but I have turned off my water softener (it produced lots of sodium); I do monitor EC though, in micro-Siemens and I do add water when it falls down to ~500; the maximum was almost 3000 which is too much a bit. The pictures are looking like the exact plant leaves, I did use DSLR camera to keep the colours according to the reality and the leaves are dark green (which would also confirm the overfeeding theory). I do hope that without any more food this will regulate itself with just water. Once again I would like to thank you for both advice and kind words and underline that you are the community I was searching for.

Strongly agree with anyone else who has said this looks like overfeeding.. This does not look like a deficiency. If the foliage color is indeed true to picture. They are quite dark.

Hey buddy :-) If you suspect overfeeding, I would rinse the double pot volume with pH-adjusted water that has an EC value of 0.4 :-) The Ec value is best with osmosis water 0.0 and stale normal water (chlorine can escape if the water is stale) 👍) mix together until it gives an EC value of 0.2. Then add Cal / Mag until it is at 0.4. Set pH value at earth about 6.0 to hydro / Areo 5.6 - 5.8 :-) D Good luck 👍🍀

That does look similar to a calcium deficency. There could be a few reasons for it based on how you are growing. 1. If you are growing in coco you need to suplement calmag the whole grow. If you are then id bump up the dosage a bit. 2. Make sure your ph levels are correct in either soil(6.5-6.8) or coco(5.5-6.0). If your ph levels are off your plants wont be able to absorb certain nutes. 3. If you are growing in soil, its entirely possible that the soil you used may not have enough calcium in it. In that case add a calmag or bump up your dose. 4. If you are using distilled/reverse osmosis water then you usually need to suplement with calmag. Overall first thing to try is double check your ph levels going in and coming out as run off. If your run off is measuring very high or low make sure to flush your plants with a ton of correctly phed plain water until the run off comes out at the proper ph. If thats not your issue, up your calmag supplementation.

Hello, I think it's an excess of phosphorus since you've over-fertilized. Normally, if you have a good pH level and a good EC in your substrate, it should tolerate high levels of phosphorus. The toxicity will be based on the absorption of future nutrients like calcium, copper, iron, zinc, magnesium... Don't forget that the leaves are very important for the biosynthesis of phytohormones, and for the production of vital structural elements for the plant's development. Basically, this will slow down your growth. Feel free to reach out to me if you want. Good luck! 😊

Hello.. Hope you are well.. The spots are most likely from ur said overfeed.. Its just a build up of salts n stuff the plant cudnt use.. They will b fine tho just keep eye on ur feed n she'll grow out.. take of effected leaves if she got enuf foliage already.. Hope she turns out well and stay safe.. 👍🍀