What I’m trying to hopefully understand is if the majority of that 8.2 pH is because of the ammonia, which would be good, or if pH will stay elevated when the ammonia is converted to nitrites, which would be bad. I’ve read urine tends to be acidic, but I’m guessing that changes as the urea decomposes into ammonia? Prior ppm ammonia (assumed 0, water was straight from tap filter) PH of the residual water (prior tests were 7.2-7.4, but I believe the water was brackish and the tests inaccurate.
How would you prepare 25 mL of 0.010M NaCl. Without the addition of the acid or base, the solution will have very little buffering capacity. What volume (mL) of concentrated NH3 (14.8 M) should be used to prepare 200.0 mL of a. This morning pH was 8.2! And ppm ammonia was 4. Essentially, there are two buffering regions when 10mM ammonium acetate is added to our eluent solution, and either dilute ammonia or formic acid are used to adjust the pH. Last thing before bed was adding some urea to decompose into ammonia. When I tested the pH, I don’t think there was enough time for the 2-3 gallons in the growbed to fully mix in. Last night added in about 60 gallons of filtered drinking water.
I screwed up pretty bad the first time and just swapped out almost 100% of the water (there was a residual 2-3 gallons in the bottom of the growbed). I’m trying to get the chemistry right for an aquaponics garden I’m building.
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