Mine was complete fail with Eco Complete, even with prefilter on the pickup tube, sponges and so on.
All my whispers and bio wheels are fine with the Eco complete sand but the AC 110 was just horrible. Even if the slightest bit of sand got disturbed it would pick it up and make a horrible grinding noise. I hope you have better luck than me, I threw mine in the garbage. Worst HOB I ever used, especially considering I had to silicone a crack in the pickup tube right out of the box.
All my whispers and bio wheels are fine with the Eco complete sand but the AC 110 was just horrible. Even if the slightest bit of sand got disturbed it would pick it up and make a horrible grinding noise. I hope you have better luck than me, I threw mine in the garbage. Worst HOB I ever used, especially considering I had to silicone a crack in the pickup tube right out of the box.