Total gas pressure, TGP, is the sum of the partial pressures of all gases dissolved in water plus the water vapor pressure. When water is supersaturated, it may cause gas bubble disease in fish and other aquatic animals. The reasons why water becomes supersaturated are:

• Heating of water
• Air leaks or air entrainment on the suction side of pumps
• Water brought up from deep wells
• Entrainment of air in water released over dam sluice ways

TGP should be monitored or spot checked with a handheld meter, like InWater Technologies’ new TGP Tracker. For info email info@inwatertech.com.

The second volume of Medaka: Biology, Management, and Experimental Protocols, together with the first volume, helps to familiarize scientists with the advantages of using medaka in experimental designs, to facilitate research using medaka, and to stimulate progress by adopting medaka as a model animal. The second edition expands on the first by providing additional information and current protocols that have been recently developed, or modified, to successfully raise medaka fish under stable culture conditions in the laboratory. » Learn more