got a question about nutes in mid flowering.

So my baby's are well into week 4 of flowering now. i have NOT added any nutes high in Phosphorus or and secondary nutes like Mg and Sulfur during flowering at all. It hasn't shown really any sign of nute deficiency. I haven't had any problems really except a recent development of a few spidermites. I was tempted to giving it a mix of epsom salt mix with H20 and a layer of bone meal (5-15-0) on the top layer of soil then coating that with potting soil then heavily water. Is all this neccessary? would i see results? or am i wasting my time?

Very healthy looking plant you have. At this stage I see no reason to add epson salts as It's for a magnesium deficiency which is most commonly caused by using RO or distilled water in pots, and your plant shows no signs of being deficient. Likewise bone meal wont break down in time to be of any use at this stage.
If you want to add anything at all try some molasses or flowering nutes.
But your plant appears to be in fertile soil with natural sunlight, just the way nature intended.
Well Done.

My thought on not adding any flowering nutes are. Even if your plant is thriving and showing no nutes defiency. How much better and bigger would the buds be and the potency if one added flowering nutes..?

You will see results. Hang in there.