Dave's Reef
New member
Keep in mind Dave that the checker has a +/- .04ppm accuracy. So you could have 0ppm or .06ppm PO4.
Yeah, I'm not thoroughly convinced of the result I got based on the GHA. Even though it read .02 still, I've got the GHA that could be eating up the Po4 leaving a misleading result and that's with or without a low or otherwise reading from the checker meter.
Still, I battle on!~