filter cartridges

So. Filters, right? I have a couple of questions regarding them. It's been about a month now of me unsuccessfully attempting to cycle my new 10 gallon tank, and I've had my filter running the entire time. It's an Aqueon QuietFlow Internal Power Filter, and of course has the appropriate media...

Ok so I have a 5.5 gallon tank with a heater. It does have a live plant in it. Lately I have been getting really funky readings on my water test. The tank has cycled through and I have been doing regular water changes. My pH level has been dropping low for some reason and Nitrates have been...

Hi so my tank’s filter cartridge is purple, which I have never had before. I’m not talking a brownish purple, this is like a magenta purple. I don’t know what could be causing it. Is it some sort of weird bacteria or something I should be worried about? I didn’t want to just go ahead and change...

My 10 gallon aquarium came with a penn-plax cascade 300 internal filter. The filter includes a sponge and activated carbon cartridge. After learning that activated carbon is pretty much useless except for removing medications and chemicals, which I don't need (and also removes tannins, which I...

I have a brand new tank that's been running a fishless cycle for about 2 weeks. I'm still in the nitrite peak, so there's a while to go before I start adding fish. I have, however, started adding a couple of plants. And they're not doing well at all. They've been there for a week, and the fern...