Best time to add pk in flower. 10 week strain in soil?

Do you drop other nutrients when you use pk or jus lower the dosage. Have done both jus seeing what people think is best to do.

the 0.3 mS base-EC of your water (which i envy you about.. mine was 0.8, so i really needed an RO filter) needs to be added, as that's what the plant also gets, so it's 0.9 total (even when the added nutrients are only 0.6. the other 0.3 are still calcium and other salts in the tap-water).. I personally would only start with the bloom-nutrients after the stretch, but that's something you can try with the next grow. at the beginning of bloom, you still have the stretching phase, where the plant still requires a lot of N, which most bloom-fertilizers have little of.. so it's usually better to switch to bloom, when the bud-production starts and the growing in length has stopped.. anyways, that's not your issue or question here, yeah, if you're in week 5 of flower, you can start adding p and k..

No using tsp water thay 0.3 so 0.6 aiint tha high is it? And I'm.in week 5 mate been feeding them bloom scince start of flower. That's what hydro store told me to do.as worked fine but wana give a boost or pk now

i would start using bloom-nutrients after the bloom-stretch has finished and majority of the energy needs to go into bud-creation.. if you're in soil, then 0.9 is actually quite high (if you're using RO water).. i suggest reading through this link: https://www.mandalaseeds.com/Guides/Fertilizing-Smart-Guide this was quite eye-opening to me..