Aquarium Sys - Instant Ocean Fish Heaters .INSTANT OCEAN VISI-THERM HEATER 150W The Visi-Therm has a unique directreading temperature setting feature, which eliminates guess work and makes pre-setting temperatures very simple. Visi-Therm is completely waterproof and totally submersible.
Aquarium Sys - Instant Ocean Fish Heaters .INSTANT OCEAN VISI-THERM HEATER 25W The Visi-Therm has a unique directreading temperature setting feature, which eliminates guess work and makes pre-setting temperatures very simple. Visi-Therm is completely waterproof and totally submersible.
