ATO recommendations

[darb]

Been running the hydor one since it came out, no issues at all; optical sensor and the ability to use any pump you want.

[rishu_pepper]

Have been happy with my Tunze Osmolator. Can usually find these used.

[The Guy]

Originally Posted by rishu_pepper

Have been happy with my Tunze Osmolator. Can usually find these used.

+"1" there expensive new, but sometimes they can be found used. It's worked perfect for me.