The bronze-ish color is usually a sign of potassium deficiency. What type fertilizer do you use; and how often.

I mentioned that above. I use dynagro(foliage pro) and apply it every 2 weeks

I have been using FP at every watering (every 2-3 days) at a ratio of 1.5 tablespoons per Gallon. Have had great results.

Looks like spider mites to me.

I thought along the lines of what Vladimir said...some type of pest?

So I'm not fertilizing enough? Also I sprayed it with 3 in 1 organocide yesterday and another time few months back but I don't see any improvements at all.

You might not see any improvements because the mites might be dead and gone but their damage will stay until the leaf gets old and falls off.

I don't really see any red mites now, just a few here and there but I hope its not something microscopic thats attacking it.

But let ask... do spiders help reduce insect pests like spider mites at all? Are they beneficial? I have like 5 spiders making webs on my sudachi, yuzu, and satsuma mandarin and I leave them alone there in hopes of them killing the pests.

Spiders, as in garden spiders, are generally good; because they trap other small insects; and because they are favorite food for wasps, which are always good guys. If you saw "a few" spider mites, you probably have a big infestation; you need a 10X loupe to see them.

Well what isn't considered a garden spider? And how are wasps good guys!? I got stung by one couple weeks ago and it hurt like hell...

What? Heruga, I have a wasp nest right above my trees on the window corner. Now I am scared of them!