I made the suggestion of gypsum over lime because it's a readily available source of calcium and has minimal effect on pH. I do not mean just add it to add it. I would only add it if you are using the same brand soil, are running the same strain, and had prior calcium issues. Then, I'd mix it directly into your soil prior to your next run at about a 1/2 tablespoon per gallon of soil. An over abundance of calcium can affect the uptake of other nutrients (potassium) so only use it if you actually need it.
Calcium problems are pretty easy to spot. If in doubt after a bit of research online, post a picture and someone here will help you sort it out. I'm not a fan of throwing everything including the kitchen sink into your soil in hopes that something will stick. You usually end up with toxic soup that way. Instead, watch your leaves. Some old growth does eventually die off and the plant sheds the leaf in the process of renewing itself. New growth will tell you a lot! When you see something, ask for confirmation or a second opinion and then move to fix that problem only. Wait before you try anything else.
With all that said, your plants look fine. I wouldn't make any extreme changes on anything.