If PO4 is 2 ppm the HI736 ULR Phosphorus checker won't read that high - it only goes to 0.6 ppm (200 ppb).
The HI713 LR Phosphate checker may be a better option as it goes up to 2.5 ppm (this one is frickin annoying though because it only displays the result for 10 seconds before it turns off grrr).
Quote:
Originally Posted by Scythanith
lol.... manipulate the bag...
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Perv.
