Bought a blue sponge a week ago. Was very careful opening the bag underwater and watched to make sure the guy at the store bagged it properly too. Started losing its color on the bottom and was spreading so i cut off 3 1 inch sized pieces that were still blue and placed them in the area of the tank with the highest amount of flow (i have seahorses so its not alot of flow but its the only place with any) is there anything else i can do to try to save it? I also put a capfull of marine snow in the tank. Please help