I wouldn't bother. For starts, Griffin's Spin-Out (copper hydroxide suspended in latex paint) is hard to find and it's expensive for the casual gardener like yourself.... you have to buy it in bulk. MicroKote is cheaper.
I'd up my game in general finding the right balance of light, water, temps, nutrition, etc. Gardening is all about The Balance. For example, I just ordered what might be the "holy grail" for cannabis plant nutrition (and will use it on tropicals) -
http://www.jrpeters.com/Products/Jack-s-Classic/Citrus-FeED.html In a typical soil blend you can use this from start to finish with excellent results. Do the usual noob drill using a bloom food during flowering and you'll fail.
Good luck,
UB