starky1963
Aquarium Advice Newbie
- Joined
- Jan 22, 2018
- Messages
- 3
Upgrading my 120ltr marine tank for a 400 ltr running with 2 external filters what should I use in them and should both have the same TIA
Can you tell us more about what you are planning on doing with the system?
You will need powerheads in the system for water circulation.
If you are using 1 lbs per gallon with live rock, you won't need to have any rubble. In terms of running media, it is pretty inefficient to run them in HOB type filters.