SubstratPro biological filtration spheres developed in the Eheim laboratory with high quality materials.
- Provides surface area for the colonization of bacteria to help purify your reef tank
- Reduces the peak nitrite loads better
Works great in small places By Alexander on 9/5/2015Alexander would recommend this product to a friendThe product has been around for a while. All tho it seems that many have forgotten about it or that it is not pushed in the spot light as much. It is a tried and true product. I have used it on many tanks and find it hard to want to move away from something I have used and proven it's self. All tho many have moved on/ over looked this product for the marinepure(which works great or better), but if your wanting that extra bio filter in small areas And for a cheaper price, check this product out.
Ask a question
If by Bak Pak you are referring to the PR skimmer you will not want to place media in the compartment necessarily. In most cases this can be used in a hang on back filter or in sump for added surface area. In most cases 1 L will be plenty! Feel free to let us know if you have any further questions!