Does this work?

[CuriousFins]

 

[Colin_T]

Yes they do work but they shouldn't be needed if you have a healthy biological filter.

 

[Sgooosh]

Yes they do work but they shouldn't be needed if you have a healthy biological filter.

dont these wear out when they get old?

 

[CuriousFins]

Yes they do work but they shouldn't be needed if you have a healthy biological filter.

Okay, lol. I didn't buy it, a family member gave it to me for Christmas because I'm interested in getting a fish.

 

[Sgooosh]

Okay, lol. I didn't buy it, a family member gave it to me for Christmas because I'm interested in getting a fish.

i guess it could be useful in a high tech cycle

 

[Colin_T]

A lot of people use them in low tech set ups. They use them as a back up safety feature. If they see an ammonia level, they check the water and do a big water change and gravel clean the substrate.