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Because unless you reduce the area of exposure to the water, it will peg the meter every time and calibration is impossible. You have to space the contacts about 1 inch apart and only expose the tip. Otherwise, the reading will increase and decrease according to how deep you dip the contacts in the water-- and most often the meter will just peg. Feel free to experiment. That's just the way I did it.
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Are women allowed to live in a penal colony?
You know-- there IS ONE kind of "job" that you can get that does NOT disqualify you for unemployment!
Current Tank Info: 20 gal hex 30lbs fiji rock, 4 28 watt pc lamps (2x 6500k and 2x 7100k)various corals, 75 gallon w/2x 250 watt 10,000k MH and a 400watt 12,000k in the center, 90 lbs fiji and tonga rock sps, open brain, frogspawn, purple Heteractis crispa clowns etc
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