Tetra ReptoFilter Filter Cartridges, Medium, 12 Total Cartridges (4 Packs with 3 per Pack)

Great value. Keeps water clean and clear for 2/3 weeks.

Great product

We have two filters utilizing 4 of these filters on a regular basis and the water is never clean.

Amazing, my tank looks clearer than it has been in months

Saves a lot. Beats the pet store prices

These really do keep the smell down for my turtle.

Works as the description says.

Excelente inversión. Cada 45 días ordeno 3 cajas!!!

These are great filters. The only downside is that you need to change them a little more often when you have hard water, but it still works great!

High quality