I have two 29 G tanks. I was thinking of picking up a 40 G breeder. And putting the two together. I have moved tanks before. My question is can I reuse the sand (from one) and the crushed coral from the other? I will use the filter and shimmer from the one tank. Is there any thing I should be careful of? My wife has been asking me to move one of the tanks. Why not mix the two. :smile: Thanks for the help..

