First reef tank in about 1987/8 ..... freshwater for about 15 years before that. I went at my equipment closet about a decade ago and got rid of most of my older kit. Probably the oldest thing I had was a Dupla float switch that I bought around 1985 and retired soon after because it was passing full mains power (versus low voltage). Now the only thing left in an advanced state of decomposition is me.




