smallfry53
Aquarium Advice Freak
In the last year I've tried to get a better understanding of water parameters. I used to just test nitrogen, and ph. Lately I've been testing gh, kh, and tds, which from my reading seem like they are at least as important as ph.
Anyways, so I bought an HM EZ tds meter. Then a few weeks ago I decided to buy an HM TDS-3 meter so I could see if they gave me the same results.
The first tds meter typically reads around 200-220, but now the new meter reads 155-170ish.... I figured there would be a slight variation, but now I'm wondering if these meters are good for anything.... If I get another one is it going to tell me my tds is 300?
Is there any way to calibrate them? or maybe I'm doing something wrong....
Anyways, so I bought an HM EZ tds meter. Then a few weeks ago I decided to buy an HM TDS-3 meter so I could see if they gave me the same results.
The first tds meter typically reads around 200-220, but now the new meter reads 155-170ish.... I figured there would be a slight variation, but now I'm wondering if these meters are good for anything.... If I get another one is it going to tell me my tds is 300?
Is there any way to calibrate them? or maybe I'm doing something wrong....