Ive done alot of titrations threw the years, and the only thing ive ever used is aqua -check strips from lowes.It will take a few tries to get the feel for them, but its cheap.Like 7$ for a hundred strips and it tests for chlorine bromine Ph and a couple others. And it dont matter what you put in your water (nutes ,whatever) it will read ph pretty precisely, trust me
If there is intrest, I will post a thread teaching how to accurately read ph strips, with pics! I have a "unique understanding" of organic chemistry. And I believe it would benefit everyone here that dont want to shell it, out for a dig. ph meter, plus its more excitiing!
Give feeed back if intrested because im not going to waste time on a detailed project ya dig®