Sand Shark UL Internal Filters
Up to 225 Liters per Hour (60 gph)
Penn Plax - Sand Shark UL Internal Filters
I have been using my Shark on my 40 L for over a year. The tank is planted and contains 3 golden wonder killies and an Otocinclus. It has worked fine and I've had no problems. Admittedly, the tank is nicely understocked and planted. I only have to rinse the sponges monthly (one in tap water and one in tank water to preserve bacteria). Go little Shark!
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