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Review title: Only the portion of tank with the filter is getting filtered!
Product review: With no holes for water to flow in and out, only the side of the tank with the filter in it is being filtered. RIDICULOUS! Not to mention betta's need 5 gals or more live happily and this divider suggests you put two or even THREE in one 2.5 gal tank!?! And that anyone not on the filter side sit in their own waste?! CRUEL! These fish come from rice paddies that, for the majority of the year, can be thousands of gallons! And they are naturally aerated. The myth they like tiny places is absolutely ridiculous.
