Hi every one had 2 problems with the tank. First the Solaris light not working properly the solar and timer not working so I called pfo and spoke to Pat and they are sending me a new one. Great customer service and Pat was great. Should have a new one in 5 days and they are letting me hold on to the old one till I get the new one. When it does work and light is on the colors and the corals look fantastic It really does make a difference. They think the sensor for temp in hood not working properly. Second I cracked the 40g br sump-refrig I silicone it for now seems to be holding and Im going to try to get a acylic sump instead to try to prevent any cracking in future, with the big return pump and movement or shifting during maintance can crack it again. Im want to avoid that again. I cracked it while servicing the return pump.