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TMC Auto Top Up Compact
TMC Auto Top Up Compact
  • TMC Auto Top Up Compact
  • TMC Auto Top Up Compact
Tropical Marine Centre
Product Code: TMC-ATO In Stock
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TMC Auto Top Up Compact




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was £59.99 £57.99
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Automatic Water Top Up system to help keep your aquarium salinity balanced from evaporation by adding R.O water back into the aquarium. TMC Auto Top Up come in two models choose from the Standard System (1 float switch) or Plus System (2 float switches)

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Aquarium Salinity is an extremely important parameter to keep balanced in the marine aquarium. Through evaporation water is lost from a marine tank concentrating the salt level in the aquarium. By installing an Auto Top Off (ATO) unit to your system, float switches will automatically add the amount of water that has evaporated keeping your aquarium balanced.

TMC Auto Top Up units are easy to install to any system and inclued the following features:

  • Safe, low voltage auto top-up system incorporating a high quality float switch
  • Ideal for topping up evaporated water in both marine and freshwater aquariums
  • Simple to install using the compact magnet mount sensor bracket suitable for aquariums up to 12mm thick
  • Supplied complete with an energy efficient 3.5w 12v DC brushless pump capable of 200 l/hr (max head 2m)
  • Includes 2m of 6/9mm flexible top up hosing, anti-siphon valve and hose securing clamp
  • Two versions available: Standard System or Plus System

The TMC Auto Top Up Plus has an extra float switch to shut off the ATO system when the R.O reservoir has been depleted.

Standard System

x1 Float switch
12V DC brushless pump
2m Flexible hose
Anti Syphon valve
Hose securing clamp

Plus System

x2 Float switches
12V DC brushless pump
2m Flexible hose
Anti Syphon valve
Hose securing clamp

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