How do you keep you salinity at a certain level?

[asylumdown]

Originally Posted by Coleus

+1 to refractometer and ato. Also when you do water change, make sure the new fresh water has same salinity with the current tank and make sure you fill exact amount that you withdraw.

Tunze ato is good but if you spend a little more, may you can get apex with io breakout box then you are set. Seriously, once you have a controller, it is so easy to take care of the tank. I would never a saltwater tank running without a controller.

I found with my float switches controlled by Apex controller, i can pump fresh water or new water to my tank with the exact amount.

The reason I love the tunze is because it doesn't use a float valve. I just totally destroyed my tunze ATO unit in a flood 2 days ago though (piece of plastic somehow plugged the outflow of my refugium... what a mess), so for my next tank I'll either have to buy a new one, or do something else. Can the apex work with an infrared sensor like the Tunze, or is your only option a float valve?