Marina® 3 in 1 Power Cartridge
This is a great little filter for my two goldfish, they love to swim in the current.
I wonder if anyone has trouble with it making the water cloudy one day after putting in a new cartridge? I put a new one in each week, and it becomes cloudy right away. Is there something I'm doing wrong?
August 25, 2013
Great for goldfish!
I have two Marina I25 filters in my 10 gallon goldfish tank, and they keep the water very clean! The filter runs the water through air as a waterfall and helps to keep your tank oxygenated. The filters themselves are quiet and even my sleepless sister doesn't complain about two of them running. My goldfish like to play in the gentle current they make.
A few cons are that you remove most of your bio filter every time to change out the cartrige. You have to add a lot of biological additives every cartrige change. The cartiges are also rather expensive to buy every month.
April 3, 2013