JBL CombiBloc II CristalProfi e - JBL
Best current price£9.59from www.pond-planet.co.uk
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Product Information
Full details
The JBL CombiBloc II replacement foam pack is designed for owners of the CristalProfi e series external filters who want to maintain optimal water quality in freshwater or saltwater aquariums. These precision-engineered sponges provide a two-stage filtration process that effectively captures both coarse debris and fine particulate matter to keep the biological ecosystem healthy. While these filters offer excellent durability and a perfect fit, users must ensure they are correctly ordered within the filter basket to maximize water flow efficiency.
All features
| Brand | JBL |
|---|
Extended Product Information
FAQs
How often should I replace these sponges?
Replacement frequency depends on your bioload, but typically they should be replaced when they lose their elasticity or can no longer be thoroughly cleaned.
Can I use these in my saltwater tank?
Yes, the JBL CombiBloc II material is inert and perfectly safe for saltwater environments.
Should I wash the sponges with tap water?
No, you should always rinse filter sponges in a bucket of used aquarium water to protect the beneficial bacteria.
What does 'ppi' mean?
PPI stands for pores per inch; a lower number like 15 means larger, coarser pores, while a higher number like 35 means smaller, finer pores.
Are these sponges reusable?
Yes, they can be rinsed and reused many times before needing a full replacement.
Troubleshooting
Reduced water flow through the filter
The sponges are likely saturated with debris; remove and rinse them in a bucket of aquarium water.
Fine particles remaining in the water column
Check that the fine-pored (35 ppi) sponge is properly seated on top of the coarse sponges without gaps.
Pros and Cons
Pros
- Perfect fit for CristalProfi e external filters
- Chemical neutral material protects aquarium livestock
- Effective at capturing both large and small debris
- Helps extend the lifespan of biological filter media
- Suitable for both saltwater and freshwater tanks
Cons
- Specific to JBL CristalProfi e models only
- Requires manual cleaning and eventual replacement
- Must follow specific layer order for best performance
Setup, Compatibility & Care
To install, first power off your JBL CristalProfi e external filter and close the shut-off valves. Open the filter head and remove the upper filter basket. Remove the old sponges and discard them if they have lost their structural integrity or can no longer be cleaned of debris. Insert the new CombiBloc II sponges, ensuring the coarse pads are at the bottom of the basket and the fine pad is on top. Before restarting, ensure all basket seals are tight. For care, avoid using tap water for cleaning, as the chlorine will kill the beneficial nitrifying bacteria colonizing the sponge. Use only used aquarium water for rinsing.