BrianKC
New member
Also also...a lot of folks don't even check ph regularly...alk, calc, and magnesium (the big three) are much more indicative of good chemistry...8.5, 450, 1320, respectively, is what you aim for. And, if magnesium is out of whack the other two are hard to control...magnesium is the chemical glue for the other two.
So I'd definitely recommend getting magnesium and phosphate kits. You can take your pick on Mg tests, but I definitely recommend the Hanna phosphorous ultra low range tester...it's pricey but really none of the other kits are very accurate. If you get it, you have to do some maths to convert the P reading to the PO3 reading we use. Take the result it shows and multiply it by 3.066 divided by 1000 to get your phosphate result...e.g., if the result is 30...
30 X 3.066 / 1000 = 0.09ppm.
So I'd definitely recommend getting magnesium and phosphate kits. You can take your pick on Mg tests, but I definitely recommend the Hanna phosphorous ultra low range tester...it's pricey but really none of the other kits are very accurate. If you get it, you have to do some maths to convert the P reading to the PO3 reading we use. Take the result it shows and multiply it by 3.066 divided by 1000 to get your phosphate result...e.g., if the result is 30...
30 X 3.066 / 1000 = 0.09ppm.