I have simplified my tank a little. I got rid of my calcium reactor and just use my kalk reactor again. My tank is doing the same if not better without the reactor and there is so much less equipment on my tank now. I also removed my seperate feed pump to my external Geo skimmer and teed off the main return line , which was too powerfull to send all the water back to the tank anyway. Now My tank has no submerged pumps in the sump, and only two pumps the main return pump and the closed look. Less pumps for me to have to decalcify . The skimmer has worked great from day one, but I think it is even working better now. I need to get more pics if I ever get the time.