It's called lime, derived from limestone, NOT the fruit. Dolomitic (dolomite lime), or Calcitic (garden lime, or agricultural lime). Farmers and gardeners have been using it forever, especially since they got the equipment to crush it.
You get the soils pH right and that's it, not anything that's dumped on the soil, like water, nutes, etc. Liquid's pH has at best a temporary effect on the soils pH.
Baking powder, lemon juice, pH up/down is stoner science at best and generally used by inexperienced growers who have never gardened, farmed, or have a clue as to actually what's happening with their soil.
A 40lb bag cost less than $5 and one application/grow is all that's necessary.
Of course that eliminates all the complicated pH crap that is only necessary in hydro. The noob growers seem to love it though.
Wet