K deficiency ?

Likely P or K deficiency if it’s in flower. If it’s not in flower it you’ll be a K excess and will need a flush.

Yo diria que es un exceso de sales, te pasaste con la ec

This is iron deficency try ph 6.0 Your ph is too high. And flush the plant

No, it looks like nitrogen toxicity/burning.

unless you think chlorine is a possibility... under normal circumstances the level in tap water is not a problem, fwiw. it probably does more harm to let it set out 24-48 hours going stagnant, and if local water treatment uses chloramine(? close enough), it doesn't evaporate in that time frame anyway.

That's what it is... yup... Looking at your diary, it's probably the All-In-One nutes you're giving her as it probably contains too much nitrogen but of course they don't tell you what the actual NPK ratios are - but I'm willing to bet it's caused a nitrogen toxicity which causes a lockout... you're already giving a PK boost so I'm not confident that simply upping that will produce any effect here. You may have to flush to clear out excess nutes/salts and get her back to ground zero... Good luck!

Yeah looks like it. Check your run off pH . It may be too high locking out potassium . Soil needs to be 6 to 7 pH Coco 5.5 to 6.5 pH.