creekbottom Posted March 29, 2012 Report Share Posted March 29, 2012 This might be a dumb question... but whatever! What is the difference (or is there one) between white, blue, and black filter sponges? I was at a LFS and noticed bulk sponges on the shelf in those colors. I'm going to need some of that stuff in the near future but was wondering if I have to buy a certain color? These were just sitting on the shelf, no packaging. If it was a carbon filter thingy I would suspect it would be wrapped and sealed, right? Oh, I'm just using them for pre-filters and for diffusing CO2 in the small internal filters. I like the black cause it's less noticable in the tank. Thanks Quote Link to comment Share on other sites More sharing options...
ckmullin Posted March 29, 2012 Report Share Posted March 29, 2012 Never bought those types of filter media. However I could see different colors denote different filter capabilities. Next time take a look, do they feel like they all have the same densities...the same sort of pore makeup etc. Quote Link to comment Share on other sites More sharing options...
epiphany Posted March 29, 2012 Report Share Posted March 29, 2012 Yeah, it's most likely how coarse the sponge is, or it could mean absolutely nothing and just be colours. You'll have to ask somebody at the store if there's no signage probably. Quote Link to comment Share on other sites More sharing options...
geleen Posted March 29, 2012 Report Share Posted March 29, 2012 Each color usually signifies the holes per inch. For your purpose the smaller and therefor more holes is better. you can check it out here: http://www.swisstropicals.com/Poret%20Hamburg%20Mattenfilter%20Kits.html Quote Link to comment Share on other sites More sharing options...
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