now as I stated above, depending on how big you want to grow your lady, that will be the last time you open the black trash bag, it should stay closed from here until harvest!
but there is an exception, if you plan to grow a lady as big as the gg4 that I did last time, (1 plant and covering a 4x4 scrog) well for 1 I'd recommend going with a bigger size sip! as I found out in my last grow, a plant that size, will eat through everything in that pot around the 30th day of flower! if your going smaller then no worries!
but regardless, before I switch into flower, I like to do a third and final layer, to add to the lasagna! (more ewc, compost, and bokashi) now I haven't tried this yet, but I plan to mix in some Jamaican guano, or seabird gunao, basically any kind of flower gunao to the mix of shits lol, as said I haven't tried this part, but I think it would help give it just a tad boost that could be needed!
as i said this third layer isn't needed, but I like to be sure! also at this time, the life of your sip, should be booming! and fixing any problems that may come up on its own! you shouldn't even notice any problems bc the life and mother nature, is now in control of your entire grow! if for crazy reason you do, stick to foliars!
now in the past once the last layer was done, and a few days was allowed to let the mycelium grow in, I've made a slushi of compost and water, with a pinch of molasses, and glob it on top. this is to imitate a cow walking by, and taking a nice dump on your lady! just like in the real world! but last time I did this, it caused the top to become so moist, I ended up with a major fungas gnat issue, and took two weeks to get a handle on! I won't be doing this again, but I'm going to try something similar, maybe just cutting down the amount of water used by alot! this is also why I've done a third layer, and skipped this part with great results as well!
but at this point, your done! you do not feed this girl anything else, no top dressings, no teas, just plain em1 and water when the rez goes empty! I do like to let the rez go 100% empty or at least close. before I top it off again! this is also something that may or may not be best! Idk, but I feel it works best tho!