The Reefloat AWC Automated Water Changer AWC 12.5 Litre
example: this unit will give a 10% water change on a 112 litre setup
The Reefloat AWC Automated Water Changer cuts out the need for numerous containers, mixing pumps, manual syphoning and all the mess that goes with it!
less stress on the inhabitants and little likelihood of wet floors
"lets say you have a 300l system and you want to do a 10% water change, you hook on a 30l AWC and set it running. Now you have 330l system with 30l of it being fresh.Now once its all mixed you have added 10% fresh water to the system and also in the AWC. when you take the AWC off you take away 90% old water and 10% new water leaving almost 10% fresh water in the 300l system! ----- simples!!"
The container doubles as a place to mix the salt and RO. The unit when used at room temperature requires no heating as the new and old water are mixed slowly during the exchange meaning there is no appreciable change in water temperature within the aquarium.
note: should there be a large temperature difference then inclusion of an aquarium heater is recommended whilst mixing the salt solution
It is not just temperature though; all the parameters including pH are changed slowly over the course of the water change meaning no sudden shocks to coral or fish. As well as meaning all the equipment in the aquarium can be left running as there is no change in water level within the aquarium. This hands out approach can only be beneficial to livestock.
A 31.5 ltr container will do a 10% change on a 270 litre system. The 2.7 litres of new water that will be disposed of when the Automatic Water Change Tank is disconnected is a fair trade when all the benefits of the system are taken into account.