Week 8 flower...Getting close to harvest! What should my soil PPM be? First grow - 3 x Northern Lights

Just continue with plain water, run off ppm won't have any affect on what you already have.

in my opinion you may have reduced your yield potential by cutting feeds too early I run bloom food right up to the last week then switch to ph'd water those last few weeks are when those ladies put on the bulk

This is something, if you choose to do it, you need to observe and take notes of what levels coincide with long-term health of plants.. not just a week or two. it can help speed up the process or learning, if you are systematic about it. The dividends won't pay off until you see what values correlate with healthy plants. Now, this is only informing about overall concentration, but ratios or your nutes provided are just as important. The concentration in your substrate may need to be different than another's. Some ingredients in soil fertilizers result in elevated substrate EC. The stuff that needs to be broken down by microbes is cannot physically enter the plant, so that will cause some portion to be available to rotos and some portion that cannot enter.. so you need what the plant needs plus however much to feed the microbes to produce enough of the plant-ready version (per day or hour .. a rate) anyway soil has a lot of unknowns that makes a one-sized-fits-all answer kinda difficult. I'd avoid 3EC, but if a context exists... can't deny real world results.. there would be a cause and it'd likely be related to what i mentioned above. ~3ec is the danger zone for salinity toxicity, but what cannot enter the plant does not count toward this threshold.

Roberts já disse tudo, só acrescentar que suas folhas ainda muito escuras para ponto que está. Água até ao corte. Boa sorte saudações

Just keep giving them ph water. You should be ready in about a week. They are fully developed, and are ripening. Might be ripe already. Should examine trichromes on the bud not the leaves. For a 5 to 30 percent amber mix. Check several spots.

I might just be uneducated but I haven’t worried about runoff or anything while I’m just giving plain water. I figure the plants will use up whatever’s left in the soil and from its leaves over the period of water only and all should be good