Lechuza Pon - Dance World RQS, Purple Queen RQS, Northern Lights Linda Seeds

It's good to remember that plants look paler under grow lights than they are in reality. However, if it's trending in that direction, it still means you should react to it and adjust your fertilization formula accordingly. You might be locking things out with too much P. This would cause chlorosis in new growth and interfere with K which causes the damage around the serated tips. Even though you have reduced fertilization lately, your ferts look like the type that slow-release due to need for microbes to break them down... so even though you reduced what you are adding to the soil, there's a buildup prior of 'inventory' for microbes to work on and continue to provide plant-available nutes around the roots. with soil and your fertilization methods, it'll take some guessing and trial and error. E.g. this time i'd take note of when you started to reduce and maybe do that 1 week sooner. or take 10% off what you fed each cweek prior etc... some sort of adjustment that adds up to a bit less concentration in the substrate by this point in the grow. in the end there is not enough infor to be confident. diagnosing from leaf symptoms alone is not 100% accurate. Symptoms are not discrete. pH and nute lockout are always possible too. the reason i didn't go with K-deficiency is that there is little to no interveinal chlorosis of mid and lower leaves. High P can cause issues with Ca too, which is potentially one of the symptoms seen too.

I would keep them helathy as always. React to symptoms and don't overfeed/underfeed. if your formula or fertilization process does not result in consistent results across numerous strains, then there's probably something off with the formula and less to do with 'picky' plants. I regular run 7-8 strains pulling off the same reservoir, which in a soilless context is not unlike sharing the same pot. A proper formula works well on 90-95% of all plants. Soil being a bit trickery but can get to the same place because it's just about ratios of available nutes and their overall concentration... similar contexts will have similar results, because this is a deterministic reality. Outdoors in the ground, they all share the same resoucres. No reason why it can't work the same in a pot too. Also, you don't see people leach out all nutrients from the earth around a pot plant outside right? No, because that would be an absurd thing to do.