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![The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESPIRATION OF PUFFER FISH 461 The hydrogen ion concentration of the water was measured by colorimetric means. Consequently the analyses do not represent The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESPIRATION OF PUFFER FISH 461 The hydrogen ion concentration of the water was measured by colorimetric means. Consequently the analyses do not represent](https://c8.alamy.com/comp/RHP580/the-biological-bulletin-biology-zoology-biology-marine-biology-respiration-of-puffer-fish-461-the-hydrogen-ion-concentration-of-the-water-was-measured-by-colorimetric-means-consequently-the-analyses-do-not-represent-a-pre-cise-measurement-or-an-absolute-value-since-salt-errors-are-introduced-no-corrections-have-been-made-for-salt-errors-the-ph-determinations-must-be-taken-only-as-of-relative-values-in-one-type-of-experiment-the-hydrogen-ion-concentration-of-the-water-was-controlled-by-the-addi-tion-of-carbon-dioxide-gas-in-a-second-type-hydrochloric-acid-was-fig-2-graph-showi-RHP580.jpg)
The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RESPIRATION OF PUFFER FISH 461 The hydrogen ion concentration of the water was measured by colorimetric means. Consequently the analyses do not represent
![Day 13 of my tank cycle. Ammonia 4ppm, Nitrites 2 ppm, Nitrates 20 ppm, PH 6.4. How are things looking? Since adding ammonia I have noticed a build up white stuff on Day 13 of my tank cycle. Ammonia 4ppm, Nitrites 2 ppm, Nitrates 20 ppm, PH 6.4. How are things looking? Since adding ammonia I have noticed a build up white stuff on](https://preview.redd.it/ntmola9mgfl81.jpg?auto=webp&s=5fede738964735735281de4da58c0ccc99bd7a85)