where to get sponge filter sponges for diy sponge filters
where can i find these sponges people make sponge filters out of?
im looking for the bigger ones like 4"x4" squares i see people make and sell on aqubid and other sites. i have gone to most stores here and no sponges around. where can i get these from? im not looking to make and sell just want to make some for myself and friend.thanks