Yea thats what i thought too, when i added it but i love it. I might get the Korila 2 and put in instead of a korila 1. I aslo have a aqua clear 30 powerhead in there i have that up high on the tank to move the water around the surface, and the korila 1 in the side of the tank for the middle right know. When i get the korila 2 i am going to put it on the left side of the tank lower to the sandbed and face it up a little bit.