Yes you are right on trying to spend less when having a baby, but you're totally wrong on the meters, those ,$20 crappy ph meters are worthless he's going to spend less in the beginning but he's going to have to end up buying more of them, and most probably the plants will suffer also, I am saying this from experience to help Allah, no where am I trying to diss you, it's just no help to Allah to buy cheap ph meter for it to not work. All those rapi test, luster leaf, cheap meters are crap