Oscars can tolerate a wide range of water hardness levels but we would recommend keeping it around 12dH 15dH. Because of this we would recommend a good quality water filtration system as well as an aquarium heater with a built-in thermometer. Perform your weekly 10-15 water changes so that your Oscar always has clean water and the waste that is not processed by the aquarium filter is removed.

Oscars are very sensitive to changes in water temperature as well as increases in ammonia levels.

Oscar fish Oscars are very messy fish so fish tank maintenance is paramount. Your oscar needs good filtration to keep the water from becoming toxic and you need to keep the filter s well maintained. Here in phoenix the water is very hard coming out of the tap i have an ro unit but it s not enough to treat the water for my 120-gallon oscar tank one mature oscar 120 gallons a few plants . Problem is the water has a very high ph around 8 and very hard i don t have a hardness kit but my tds meter puts it around 630 ppm tds out of The oscar is the most adaptable of all the cichlids. When it comes to ph and hardnessstability is the name of the game. Wild oscars are native to water 6.5 - 7.6ph and hardness 70-320they are one of the widest distributions of cichlid. Hardness of water kh is a different thing than acidity ph however keeping you kh steady at 7 will result in a steady ph. Your oscar wont mind a ph between 6-8 as long as it s steady. One fully grown oscar will require approximately 150 litres 40 us gallons 33 imperial gallons of water however it doesn t mean that a single specimen can be kept in a 150 litre tank

Instead tank should be large enough to swim and hide. Hard water is more resistant to ph changes and ph changes are bad. Aquarium water hardness basics. Here are some basic terms that are related to water hardness. You ll want to get yourself a test kit. Oscar fish everything you want to know series november 26 2007 General hardness also known as water hardness is referred to as gh for short. It s basically the measure of the many salts that are dissolved in your water. In particular calcium and magnesium. Water with a low gh is said to be soft and water with a high gh is considered hard.

I don t know what to do I called my fish store and they told me to get ph down but i am afraid to add chemicals. My oscar didn t make it and we had to remove him from the tank. My nitrate is at 0 nitrite is at 0 water hardness is at 150ppm chlorine 0 ph 7.8. Water temp is at 78f. And my filter is very clean. The best known award is the academy award of merit more popularly known as the oscar statuette. Made of gold-plated bronze on a black metal base it is 13.5 in 34.3 cm tall weighs 8.5 lb 3.856 kg and depicts a knight rendered in art deco style holding a crusader s sword standing on a reel of film with five spokes. The five spokes represent the original branches of the academy actors

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