Review on Efficient Filtration with XINYOU XY-2893 10 Layer Sponge Biochemical Water Corner Filter by Kayla Schmidt

Well, this is the answer to every grower's prayer. They're big, yes, but absolutely PERFECT for a 29 gallon tank.!Amazing!Perfect!.Customer service was helpful!.Thanks guys.Wish more vendors would carry this.It's crazy to use round ones when you can use a corner filter .also.density is perfect.they aren't dense enough to lose dirt when pulled out for cleaning.remember folks the only way to clean your sponge filters is to soak them in reservoir water (in a bowl), squeeze a few times and drain the water.