tds meter

Freshwater aquarium: newly cycle 20 g planted, substrate: Fluval Bio Stratum on the bottom, gravel, and sand on top about 2 weeks ago I got 3 pea puffers and 4 snails. All my parameters were showing well even now it does, but a week ago we got a new TDS meter. The puffer and snails were fine...

I'm looking for some kind of monitoring system that will meassure eg. pH, nitrate, nitrite, temperature, tds etc. I have a TDS meter, digital thermometers in each tank and different chemical test sets to test for nitrate, nitrite and pH. I'd really like some kind of monitor or electronic tester...

Hi Guys Please can anyone advise me what meters to use to check PH TDS KH Cannot recall the other ones. I have had bad luck using singular meters for PH, TDS etc. And have vowed not to buy cheap ones again. For instance getting a cheap TDS meter to show the correct value for Reverse...