hi guys.....need some information normally what kind of bio media used for arowana tank?or depends on tank water quality?

Plan to buy a bigger tank for my arowana. Problem is the only suitable place to put this new tank is the existing tank location. Not sure how I can safely transfer my aro to this new tank. Any idea guy?

Hi Sifus,

just want to get your opinion. i bough a 6inch Aro on March. i kept it in small aquarium. on May i bought a 3x1.5x1.5 aquarium and transferred the Aro. it was floating tail up for a day and then became normal. end of may i bought Dophin cf1400 and water quality became clear. i then start to change water about 30% every week and i will put some salt and 15ml of nutrafin and all went well. on 13th Jun i changed water same way then after a few days i saw there was brownish color alge like growth in the aquarium. i checked local shop they said its normal and asked to wash the tank and put some pleco. so last Saturday i bought 2 small pleco, 1 baby oscar + 1 red tail . i first used sponge to wipe the brown alge and stopped my filter and air buble. water was already brownish and i let it settle down for half hour. then i pumped out about 40% of water and fill up new water from tap. then i poured nutrafin 20ml and didn't put salt . then i released all then new fish also inside with the water. after few hour saw my ARO slow swim on top only with his mouth open and close. i suspected something wrong. Sunday morning i went to fish shop n they told me it could be because of chlorine  so asked me to change half water and put in anticlorin and salt. i removed the water add salt + nutrafin 20ml and add water. ARO was still like that. evening about 5 pm on same day say aro already upside down stuck on my filter but still breathing. when i try to remove it it vomited blackish substance similar to alge. i moved it to small aquarium where i used to keep small karp for feeding. then after half hour later it died. but other fish in my tank all ok.

this is when its ok.


this is the algea like brownish growth


this after 1st change water


ths is after changed to small tank



after dead its already 10inch



my wife is very sad as this is our first ARO. so she now ask to buy new 1 since the tank looked empty. im trying to find what went wrong so same thing dont repeat. please advise. already plan to buy 7x2x2 tank next week for the ARO

Good ideas. Let me talk to LFS first. My only worry is housing my Aro there will expose it to new bacteria and water parameter.  2 weeks is a long time. I saw ppl using PSB by pouring it into the sump filter. Anyone have experience ?
Thanks bro. Currently using top trickle filter but I don't think the media is enough to fill the larger sump tank. Can I buy new media and dump it inside existing aquarium and let it settle for few weeks before the new tank come?

Went out buy blackwater extract ...end up tah pau a goldie lol.
5 incher, eat pallet.
However no high expectation on such normal grade aro, but will try to groom like how i groom my red

Anyone have design layout for sump filter and overflow weir? Plan to build 6x2.5x2.5ft tank with 5ft sump

Very informative video Harvin. Great job. Keep it up ! Just wondering does the overflow pipe have very loud noise ? I found few solution on Youtube but my LFS doesn't recommend it bcoz they said it will easily get clogged. They also recommend another design of sump tank as shown on the attached photo. Anyone know what's the different compare to sump tank with narrow partition?

This is the overflow silencer that i mean.


Is it better to add additional glass to slow down the flow of the water ?

such a beauty, nice catch bro. 

how i wish my cheap MG could turn out at least lvl6 cross just like urs ...

Hello aro lover, i just bought 4ft standard tank, 4ft L, 1.5 W, 1.5ft D, is it enough for 1 arowana for long term keeping? Will it outgrown the tank in the future?

4ft only can because i also have other tank ranchu, channa stewartii, and alot of betta, hahah no space already to buy bigger tank,