zeovit rocks - how often do you replace?

[Brent F]

Tony, you feel weird throwing out rocks. I think the weird thing is paying $15 per litre for rocks

[Jason McK]

How I understand the Zeolith to work is that it is like a carbon or phosphate remover. It get's exhausted over time.
I change my rocks ever 10 to 12 weeks but always leave a bit behind to help seed the bacteria colony

J

[Captainhemo]

Originally Posted by Brent F

Tony, you feel weird throwing out rocks. I think the weird thing is paying $15 per litre for rocks

Yeah , and then throw em out ! LOL, this is a viscious circle .....

[andresont]

I am no longer using Zeo rocks.
so anyone who whants 2/3 of the bag its yours for free.