David unless you want a hard water tank take them out immediately
Keith
Unless you want a hard water tank take them out immediately.Those green rocks I have I think they're Limestone. Every night the snails are all over them.
Can you clear this up again please. I think you will find if its actually "Pillow stuffing" not the standard Aquarium filter wood it could have a antibacterial substance in it which is no good for your good bacteria in your filter.Using Pillow stuffing in filters a lot cheaper and same material.
Keith