What is it?

[scotty333]

Guys
What on earth is this for?

 

[TX_REEF]

looks like a device used to add CO2 to your planted system to bolster aquatic plant growth. You'd combine it with a container of CO2.

 

[tripdad]

For freshwater planted tank

 

[Tommy B]

Used for planted freshwater systems. It's what plants crave :grinning-face-with-smiling-eyes:

 

[IceNein]

In (planted) freshwater tanks you want to add CO2 to promote plant growth. In saltwater tanks you want to remove CO2 to increase pH.

 

[scotty333]

Was hoping the opposite , reduced co2
Oh well, have to find another experiment ha