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Really no difference between ppm and mg/l. They are the same
values. Therefor, if you register 10ppm, this is the same at
BTW, I have accomplished just about every test kit imaginable.
Except the Lamotte test kits. Just cannot seem to locate them.
I have found Seachem to be very reliable in their Phosphate,
Iron, Nitrate and Nitrite. Aqua Pharm (short version), Tetra, and Dupla
test kits are also very reliable.
Red Sea test kits.....