Make your own free website on

Home | Species | Taking Care | Basic Info | Gallery


CH1: Tank Location and Size
CH2: Water Condition
CH3: Filtration
CH4: Changing Water
CH5: Diseases

















Tank Location
Arowana can easily grow to more than 20", therefore the tank must be big enough for him. Some Arowana is known to be high jumper, it is best to cover the top of your aquarium.  The best location to show off is in the living room.

If you are a Feng Shui believer, never ever place your aquarium right opposite your entrance. It brings bad luck. The dragon must be hidden. When the guests enter the house, they will have to look around to locate the tank. Once they can locate the tank, then only they can see the dragon.
Water Condition
Furthermore the water heater maximum temperature is 32oC.If you are not living in a tropical country, please get a water heater.

I used gravel in the tank. Some aquarist do not recommend this but I need it to balance my pH. I make sure the pH value is between 7.5 and 8.5.  My Green Arowana loves it when the pH is right. If you notice your Arowana rubbing its body against the gravel or any objects, maybe your water pH level has dropped to below 6. You can use additive to increase the pH or change the water.
I made my own filter tank. I still cannot afford to have an external filter, not for the time being. There are many red tapes that I need to pass to obtain an external filter. First off, the cost is expensive, second,  must get the approval of my Finance/Home Minister (wife). The tank that I made is very simple, submersible pump is required.

Using this type of filter, I can be sure that only filtered water will enter the tank. The carbon will neutralize ammonia and nitrate. Keeping my nitrate level at minimum level and increase the pH value, of course, with the help of the gravel. Without the gravel, the pH will rise gradually. If you are interested in this technique, please check the filter and change it frequently.


















Changing Water
I change the water once a month regardless of the pH value. Before changing the water, I siphoned the water into a small tank. Make sure there is oxygen movement in the small tank by placing air pump. Transfer the Arowana into  the tank either by clean garbage bag or net (using net is not recommended). Never ever change the water with the fish inside the tank. As the water subside, you will need to fill it with fresh water. Tap water contains chlorine and chlorine will kill the fish.

Siphon the water until about 25% is left. Note. this is the best time to clean the gravel. You can either take it out to clean it (using washing machine) or you can stir/spin/swirl the water and make it very cloudy. Once siphoned, the remaining drops will follow out.

Refill the tank with fresh water, do not forget the water treatment and anti-chlorine. Please change the filter and clean the carbon. Let your water pump run for about 15 minutes.  Check the chlorine level to see whether it is safe for your Arowana. If the chlorine level is still high, pour some anti-chlorine until the chlorine is all gone.
Now, transfer back your Arowana into the tank and you are done.






Home | Species | Taking Care | Basic Info | Gallery



I am not an experience aquarist and not an expert in Arowana diseases. I only have a few tips. All of them due to the water condition such as pH problem. Arowana likes to swim near the surface looking for insects. This is their natural instinct. If your Arowana stays at the tank bottom, maybe it is sick. Please check the water condition or change the water immediately.

Drop Eye. Some said it is because your Arowana likes to look at  its own reflection from the tank bottom that makes the eyes protruding. Stop giving non-living food because it will sink to the bottom and your Arowana will always look downward searching for food. To overcome this, put gravel and place a small floating red ball inside your tank. This will make your Arowana to look up and hopefully will cure the drop eye symptom. This may take months.
Contact the webmaster for any comments or suggestion
Last Updated June 1, 2005
Copyright 2005