Thanks Orion girl! So I really really want to change out my gravel. It's just too big. It is bigger than even the typical sized pebble. Besides adding fluorite and other supplements I want a very fine gravel. I was looking at Super naturals brand and they make some finer gravel. What is your opinion there? Last part can I change out sunstrate being the tank is 6 months old and if so what is the best method to replace it with the new kind of gravel?