External filter

[scottishwildcat]

Good morning. I have a trigon 190 corner set up with 4 blu rams. It's running with the fluval internal filter set up. I want to swap out the filters and add an external one. Can I run both filters at the same time?

 

[Aiken Drum]

Of course. Are you planning on keeping them both permanently or just for a short time so that the new filter can cycle before removing the old one?

Here is a similar thread on the same topic that covers my thoughts in more detail.

New filter advice

Hi ive just bought myself an external filter, ive only ever used internal ones but decided to buy something better Now I have 2 internals in my tank and when I run my new one will it be ok to run the external with one internal? As I don't want 3 filters going. And will 4 weeks be long enough to...

www.aquariumadvice.com

 

[scottishwildcat]

The internal filter is creating far too much current in the tank and I don't want to add a spray bar so want to change to an external one. How long do I run both to give the external a chance to colonise enough bacteria

 

[Aiken Drum]

A month should help. If you can move some of the filter media from the old filter to the new filter and squeeze out a sponge from the old filter into the water near the external filter intake it will help. If you can move all the media to the new filter you could probably just remove the old filter. Keep an eye on water parameters if you do that though.

 

[scottishwildcat]

Its totally my own fault and I'm kicking myself for adding fish then changing my mind. The fluval filter has the small square sponge filter media. I really don't want to hurt the wee rams. This tank has been driving me insane for weeks now. Its all to do with not being able to control the high current in the tank.

 

[Aiken Drum]

So you removed the Juwel Bioflow M filter your aquarium came with and replaced it with a Fluval internal filter and packed the sponges from the Juwel filter into the Fluval? No reason you cant do the same when going to a canister.

What Fluval internal filter did you get? They usually have adjustable flow

What canister are you planning on getting?