In North Dakota's Bakken formation, the break-even cost has fallen into the $20s in some counties, the state's Department of Mineral Resources reported last month. Producing a barrel of oil would still be profitable at $24 in Dunn County, down from $29 last October.
You can exclude this risk. Water temperatures and influence on fish behaviour Normal temperatures for keeping discus fish lie at 29-30 Â°C. If your fish are too calm and do not eat greedily but are hesitant about eating, raise the water temperature for c. two weeks to 33 Â°C. This will raise the metabolic rate of the discus fish and encourage their appetite and their sense of hunger.
This is not for a beginner aquarist, due to the fact that the Discus fish care is tedious and will require a lot of work and attention. The Discus fish, is usually kept in a planted tank with CO2 injection, this is due to the fact that they would be able to thrive more in a slightly lower pH that is around 6.8.