Experience with Big Bud #2?

So I put out some free seeds this spring of Big Bud #2 for shits and giggles to see if it was any good. So far so good and the plants are pretty vigorous. Males have been showing for about 3 weeks now and I'm getting close to the females to start coming out in bloom. I went out to my patch this weekend for its weekly checkup and fert and noticed some of the leaves were showing a deficiency on what I think are the females. I have run into this issue before on other strains but not this prominent. I believe its either a phosphorous or magnesium deficiency. There is a slight chance the soil PH might be goofy but its in the ground so I doubt it. I'm leaning more towards a magnesium issue. Any ways I lightly fert with some MG Bloom Booster with PHed water and a little lime to see if it helps if not then I will know for sure its a magnesium issue. Does any one have any experience with this strain and is it known to be a magnesium whore?