Como Blue Large Aquarium Filter Sponge for Fish Tank

Purchased this item and it was delivered just fine. When I went to put this in the tank I noticed that there was a lot of blue sediment coming from this filter pad. I soaked it for a while and squeezed it thinking after a while the sediment would wash out, but it didn't. I also put the whole pad in the washing machine on the rinse cycle and still there was a lot of sediment coming from this filter. So much that if you poured the water in a white bowl you could see that the water was blue.

I bought this filter to clean the water, not to add stuff to it.