I just purchased the filter floss holder. Works great, No modifications needed to install.
inTank aquarium-specific designed Filter Floss Holders help improve the filtration and clarity of your aquarium while making maintenance extremely easy. What once as impossible these Filter Floss Holders allow for detritus collection while paying for themselves by discontinuing expensive and ineffective aquarium-branded filters and filter socks.
Below are the available bulk discount rates for each individual item when you purchase a certain amount