Greetings!
I am using filter bags for various filtration in the high flow area of my sump at the moment.
I've installed:
1. Orca's Nitra-Guard and Phospha-Guard (2000ml in total)
2. Activated Carbon (500g)
3. Oyster shells (1kg)
4. Rowaphos (50g)
As my biological demand increases, I need to...