Ah ok i see Bethmeg. Well looking on bio bizz site its says npk of bloom is 2-7-4
Which means theres N in the bloom but not a lot. So if your plants are not long into production then N may still be needed in larger amounts than 2-7-4 to produce stem, leaf and bud structure. When i used this stuff i would use the grow for the first 4-5 weeks of flower along side the bloom. Something like 3ml bloom, 1ml grow and 2ml topmax or summat.
So with fast little fuckers like autos you need that nutrient there for ultimate production. If not then the plant will sacrafice lower leaf mass for further production of buds. Bit like robbing pete to pay paul. Bash some grow along with bloom mate and the skirt should stop yellowing more, the old leafs wont go back green tho.
Another tip - this stuff used to be plagued with mag def due to magnesium shortage in the products. It was always wise to spray leafs with epsom salts in week 3 and week 5
All the best buddy hope you get what you want from it.
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