one thing worth mentioning though, they are very sensitive to stray voltage. So if you don't have a grounding probe that could be the cause of the issue. All of a sudden mine have started doing that when they didn't before. I have a ground probe on the way. _________ Link to My 75 Reef Hardware 75G 20G DIY Refugium/Sump 2 250W MH, 4 65W PC Koralia 1 and Koralia 2 Powerheads for Currents Mag 9.5 for Sump/Fuge Return TLF Phosban Reactor Coralife Super Skimmer Software Domino Damsel Sixline Wrasse Coral Beauty Maroon Clown Reef Hogfish Cleaner Shrimp Camelback Shrimp Assorted Turbo Snails Red Legged and Blue Legged Hermits 3 Mexican Turbos Frogspawn Coral Foxtail Coral Pulsing Xenia Bubbletip Anemone |