Store › 100-Watt Drop-In Glass Heater with Built-In Controller Image 1 of 1 100-Watt Drop-In Glass Heater with Built-In Controller $35.00 The 100-Watt Drop-In Heater is used in 20-liter Brine Shrimp Hatchers and eRacks.Product Number: MH100GC Quantity: Add To Cart Added! The 100-Watt Drop-In Heater is used in 20-liter Brine Shrimp Hatchers and eRacks.Product Number: MH100GC