bio

I found my new female GT this morning nearly black with clamped fins struggling. A water test showed near lethal levels of nitrite in the tank so I did a 60% wc and will do another in a few hours. I moved over about 20-25 ceramic bio rings from established tanks into the new filter when I added...

What bio media do you use? I've been doing a lot of research on what bio media to put in the new filters for my 135, I'm just wondering what everyone is using and if you like it?

Ok All I am looking for input here. I am setting up some more tanks and I am curious as who uses which hang on filter. I have always used Aquaclear in the past but I got a biowheel Marineland filter and it seems to work good. If I get more Marineland filters then I can buy the cartridges in...

I currently have 2 aqua-tech 60s on my 55gal Mbuna tank, I was wondering if I could/should remove 1 of the filter cartridges and add some ceramic rings or bio-balls just to up my Bio filtering capabilities Sent from my DROID RAZR using MonsterAquariaNetwork App

i have a penguin 200 that for whatver reason keeps shutting off. i think i am going to swith this ou for an aquaclear. what is the be way to do this without looing he good biofilter in the penguin