dimitri320
Aquarium Advice Apprentice
- Joined
- Jun 8, 2016
- Messages
- 43
I have 2 JBL 1500 filters pumping 1500litres per hour each. They are rather new, about 2 months old, and recently I noticed they they aren't pumping as much as they used to, at least 2 times less. The filter is clean and I don't know what to do. Any advice would be appreciated!
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