I forgot potalsiium, any other house hold stuff i can use
You look good on potassium. The vains of your leaves don't look yellow to me. Potassium silicate is different. That is what helps strengthen your plant. It's derived for minerals so I don't know if there is a home remedy. There might be but I'm unaware of it.
Oh almost forgot. If your low on N and low on ph. The coffee grinds I said befor works. Kills 2 birds with 1 stone. But if your high in ph add hard wood ash. This is for soil guys only. Don't want hydro noobs adding ash or coffee to there res.