Selkotanswered grow question 9mo ago Hey buddy 👋 a question in French, that's nice 😉
Yes, without a doubt, give it a good watering with clear water while adjusting the pH.
If you're using Mills substrate, you can honestly do it every other time, until the soil is depleted; it clearly still has some reserves.
If you see the problem spreading to the new leaves, you'll need to consider a flush, but that's not necessary at the moment.
Hope everything goes well, happy growing!