So i got a order of red finger sponge last month, there was air in the bag( first problem). Then i put one piece in a medium flow area(second problem). One piece is destroyed the other one looks ok but the bottom of it has turned white, i have moved them to the back of my tank and put them in the sand ,should i cut the bottom off where it has turn white? There's not alot out about red finger sponge any suggestions thanks.