Justin94565;1395583; said:
What type of filtration should I use on my aros tank I have a 125 can anyone help me?
You can go with an external Canister filter, if you do, you need a flow rate minimum of 3 times your total gallons per hour. So for a 125, so with some breathing room, I'd look for 400 gal per hr. For Arowana's, remove all charcoal. Peat is nice for Aros, ceramic rings, ammo chips (prime with salt).
I'd also run a dual biowheel at the other end, you can cut out the charcoal but it works well to do a bit of a better overall job. Don't wash the spinners on the bio wheel.
I strongly, strongly suggest seeding a new filter, unless you have a very well established tank. Arowana's require very clean water. They like o2, be sure you have a couple sources of bubbles, like an air stone and a bubble curtain.
Be sure you have a freshwater Master Chemical Test kit and use it, a lot, at first, you need to learn this, it's easy, but vital. You can't have Ammonia or your Aro will die.
There's also the option of wet/dry bio ball drip filtration, I am not personally familiar enough with them to give advice.
Wish you good luck. Fluval is a good brand for canisters. Don't be afraid of the Chemical Test kit, It's really easy. Also, use aquarium salt as directed for a freshwater setup.
Aro's love Ketapang or Almond Tree Leaves as well, it really mellows them out and stops the Aro freak out headbanger incidents!
Good luck-Mei