There were a few problems, the heat from my light was one. Some days I would get an 8degree swing. Second, my fuge light burnt out and because i got laid off from my job I couldnt afford a new one so algae was a problem. I wouldnt mind pickin up some stuff off you denny, so i can check it out when I can find the time. Another issue was finding the right amount of flow in the tank for sps.