![Juwel BioPlus Fine](http://www.acresaquatics.co.uk/cdn/shop/products/juwel3_large.jpg?v=1333814809)
Juwel BioPlus Fine
The fine blue filter sponge house the most important bio-cultures, which are responsible to effectively clean the water. You should clean or replace one sponge at a time every 9 - 12 months to maintain the right biological balance in your aquarium.
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