Just about any sponge product made for cleaning will say "not for aquarium use" on it somewhere. If it doesn't you might be ok.
o no where on the package does it say not for aquarium use.
Just about any sponge product made for cleaning will say "not for aquarium use" on it somewhere. If it doesn't you might be ok.
I know you think we like shooting down your enthusiasm, Victor, but it's nothing personal. There are tons of things that are great to use in aquariums that are meant for other uses. From spawning mops made with yarn and corks to Velcro, Chip Clips, plastic baskets with suction cups (like for soap dishes), terracotta pots...the list is endless. But using sponges made for cleaning has risks (mildewcides, I know that some brands of sponges say specifically on them not to use them for aquariums) and there are plenty of cheap sources for the kind of sponges that are proven to be superior:
http://members.cox.net/tulsaalstons/BuklFilterMedia.htm
So while it may be great that you got a huge sponge for $3, it's not great if it has mildewcides and kills $3 worth of feeder guppies.
Find out of it does, and if it doesn't then it would make an awesome air powered sponge filter. But it doesn't look to me like it is going to make a good prefilter, because it is just too dense.
I would be even more concerned about chemicals with it being a feeder tank, I would worry about the chemicals used in making the product and sterilizing it slowly leaching into the fish you are feeding these things to. I think it's great you look for alternatives, but I don't think it's wise to look in the cleaning aisle for help with you living animals
im sure there is alot of people think your diy's are extreme and not cost effective or lack safety as a concern. like the canister filter you made way over priced for what you got and its unattractive. then the light you built i showed the pics you posted of the build to my insurance agent and asked if i had that and it caused a fire would i be covered and he said NO way would they pay off. and then the sponge diy its not the correct type of sponge and most people are not going to want to mess with cleaning it every day or 2 and the neon yellow color doesnt blend in and is a eye sore. just because something can be done as a diy doesnt mean that it should be when better products are available for less money and made properly.
but if none of this matters to you thats fine its just a opinion and this is the USA your free to do as you please.
but i do get a chuckle looking over your diy projects your a very entertaining guy.
sure its not that pretty but it blends fine when you have a spounge bob background. lol