Yeah man put your energy, time and possibly, $$$ elsewhere. IMHO/YMMV, etc. etc..
Good thing to have a decent meter. I don’t check PPM/EC every time now. Except when I change my doses. But it’s an important tool.
My first couple grows, I didn’t check PH, or PPM. Just kind of observed and such. Everything went fine. But I decided finally to get a couple meters to “up my game”. So, obviously I buy the cheapest POS I could. Damn TDS meter ALWAYS read 1000 PPM, and I was too dumb to think about the meter being shit for weeks. I figured my tap water was like molten lava. Finally got some TDS calibration fluid and snapped to what was up. And spent the $ on a decent one. Dunno why I’m rambling on about this. But I am.