- Joined
- Apr 20, 2020
- Messages
- 206
- Reaction score
- 240
Welcome to r2r! I personally recommend the 1st chamber box out of the 2 because it forces the water to go through each chamber more efficiently than the sponge brick in chamber 2 or the chamber 2 box. I fill my top with filter floss then chemipure blue and seachem purigen in the 3rd compartment. My second chamber has marine pure biogems as they were cheaper than the cubes . Sorry for the long post but welcome!