Stray voltage in the aquarium can be attributed to causing various problems. Problems such as finrot, hole-in-the-head disease and numerous others. The 'Ultra Ground' Titanium Grounding Probe can help eliminate these distressing problems. These probes feature a SOLID Titanium rod, insulated transition joint and 10ft of grounding lead to insure proper performance. Don't take a chance on having stray voltage in your aquarium.