Gravity fed bottle holders for diy ATO

[RedneckReefer68]

For those that want to use gravity feed ato on their aio or rimless nano’s.

I’ve been using this for a couple months now and it works awesome for .5 liter to 2 liter bottles

15$ shipped tyd

 

[RedneckReefer68]

More pics

 

[EvanDeVita]

how does it work exactly?

 

[RedneckReefer68]

Have you ever seen the pet bowls that keep the dish filled? Same concept, when the end of the tubing gets exposed to air after the water evaporates, water fills the tank back up till the water covers the end of the tube so no more air can get into bottle