If using tap water, consult your municipality to see if they clean it with either chlorine or a family of chemicals called chloramines.
If chlorine, let your tap water sit out for a day or so before using it to water. While chlorine is an essential micro-nutrient for plants, too much can burn it, but more importantly, kill off beneficial soil microbiota – the fungi and bacteria that convert the chemicals in soil to a plant-usable form.
If chloramines are in your water, there isn’t much you can do. They can’t be removed without some advanced chemistry. These chemicals are stronger than chlorine, and have no role in the rhyzosphere/food web. If you suspect you have chloramines in your tap water, I would recommend ditching tap water and amending R/O water, such as runoff from an A/C or dehumidifier, or using well/rain water.
Also keep in mind that using bottled nutrients such as what you are using, when working with soil, is doable but it is not my preferred approach. The nutrients are chelated, which means they are attached to other chemicals to help them get directly absorbed by plants. What this means, is that you are basically “force-feeding” the plants, rather than letting the plants uptake what they need, when they need it.
I am going to ignore that fact though, since you are not using an organic soil methodology. No harm. Just be mindful of how much nutrients you use, and how the plants respond. With chelated nutrients, it is both very easy to use too much, and very easy to mistake a deficiency or toxicity for an unrelated problem.
The Epsom salt mentioned above is a good choice if you suspect that the plant is not getting enough magnesium or sulfur. Be careful not to splash the leaves though, as it will leave a residue and disrupt optimal photosynthesis and/or burn the plants. Use this if you suspect the problem to be a deficiency in either of those micro-nutrients only.
When using bottled nutrients, one must also pay closer attention to pH/PPM of input solution and runoff, to ensure there is not too much going in, or too much staying in. Chelated minerals are very potent and disrupt the soil greatly if not careful, leading to a lot of misdiagnoses.
From the looks of your plants, it’s really hard to tell, as a lot of symptoms mask those of other problems. If you can, perform a soil test, test the water before and after mixing nutrients.