My wife got me the wrong one for Xmas. She got the low range phosphate meter how good is it
I have had both ultralow and low range phosphate meter
I prefer the low range phosphate meter its more reliable
Ultra low range phosphate meter never gives the same reading twice
Plus you have too convert it from PPB too PPM it’s a pain
Low range reads down too .01 all you need is too be around .05 plus or minus ppm