I recently started a reef tank I was told that I cannot have ground corral in the bottom of my tank with sand I would like to know if that is true and why is that a problem. Also have read that you can have a reef tank with just a protien skimmer is this possible or am I asking for problems. Is there a lighting system out there for a reef tank that is inexpensive or a DIY system that I could build myself. I currently have a 75 gallon acrylic tank with a Aquarium Systems SeaClone 100 Protein Skimmer 300w Heater and a tetra hang on filter for a 60 gallon tank.



