Table of Water Chemistry Measurements
~South America~
|
Collecting Site-water type |
pH range |
hardness |
temperature |
| Rio Amazonas-white water | 6.9 | 80 ppm | 29°C/84°F |
| Rio Apayacu-white water | 6.4 | 20 ppm | 30°C/86°F |
| Rio Orosa-white water | 6.5-6.7 | 60-110 ppm | 30°C/86°F |
| Rio Maniti-white water | No data | No data | 29°C/84°F |
| Quebrada Yanayacu-black water | 6.4 | 20 ppm | 27°C/80°F |
| Rio Ampiyacu-white water | 6.4 | 20 ppm | 29°C/84°F |
| Rio Napo | 6.7-7.3 | 80-120 ppm | 27°C/81°F |
| Rio Nanay | 6.6-7.0 | 20 ppm | 25°C/78°F |
| Rio Itaya-white water | 6.0-7.0 | no data | 23-27°C/73-81°F |
| Quebrada Tuche Caño | 6.5 | 60 ppm | no data |
| Quebrada Yanashi | 6.5 | 70 ppm | no data |
| Rio Aguas yacu-white water | no data | no data | 28°C/82°F |
| Cocha at Oro Blanco | 6.5 | 120 ppm | no data |
| Avaha Cocha at Oro Blanco | 6.5 | 120 ppm | no data |
| Paiva Chica Cocha | 5.8 | 50 ppm | no data |
| Lata Cocha | 5.5 | 20 ppm | no data |
| Urcu Cocha | 5.5 | 1-2 ppm | no data |
| Paiva Cocha | no data | 3 ppm | no data |
| Rio Xingu | 6.7 6.9 | no data | 23-28°C/73-82°F |
| Rio Araguia | 5.8-7.5 (6.5) | 4-20 (8) | 22-28°C/72-82°F |
| Rio Negro | 4.5-7 (6.0) | 2-8 dH (6) | 24-28°C/75-82°F |
| Orinoco river | 4.5-7 (6.0) | 2-8 dH (6) | 24-28°C/ 75-82°F |
| Rio Cuiaba | no data | no data | 23.6-28.9°C/74 -84°F |
|
*Rio Paraguay/Rio Paraña; Paraguay and Argentina |
6.5-7.5 (7.0) | 4-14 dH (8) | 21-25°C/70-77°F |
*rio Paraguay piranhas can sometimes tolerate water temperatures as low as 59°F (15°C), It's recommended not to keep your piranhas in these lower temperatures. Die off does occur in those lower ranges.
Bolivia water values for piranha; 72-79 F, KH 0-10, pH 6.5-7.5. Surface temperature (Air) can vary from 50F-84F. Historically, water temperature in rivers normally is about 59F, but during die off's can drop to 39F (lowest record recorded was 36.5F in 1955).
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UPDATED: 12/04/2015