Relax and Enjoy Your Pool with Dolphin Robotic Pool Cleaners. Dolphin robotic pool cleaners by Maytronics deliver automated, high-performance pool. Designed to Fit Unicel & Pleatco. Sold & Shipped by Crucial Vacuum. Product - Pool Filter Replaces Unicel C & Pleatco PCC Product Image. Pool Filter. I remember one pool cleaner a friend of mine used to have but first this was over 20 years ago, so I know how.