I love the Panta Rhei's. They are great. Tons and tons of laminar flow. They have no problem pushing water the full 8 foot length of my tank. I can drop food in one corner and the pumps will send it to the far end of the tank in no time. I finally got my hands on two different sets of the covers from panta rhei. The first ones weren't quite right and had to be modified a little bit to keep them from floating. The second set works much better. They send the water out at a 45 degree angle and are pretty easy to rotate them to send the water where you want. The two on the left wall of my tank are pointed to the left and right with a downward angle. They shoot water all the way down both sides of the tank. Aiming them that way also puts a ton of flow behind my rock work and helps to keep it clean back there. I don't have to worry about detritus collecting back there. The two outlets on the bottom of the tank are angled up and back towards the overflow. They send water from the bottom towards the top where the return lines help to push the water to the overflows. So water starts at the bottom left corner is sent the length of the tank along the bottom then back to the surface and across the top of the tank and down the overflow. My biggest problem if you want to call it that is the programming of the pump. Having to drag out a laptop is a bit of a pain but it's not something I do often so I can live with it. I feel like I'm leaving a little bit on the table with these pumps and programming them correctly. I can't find much info on how to program them online. The only place I found that seemed like it would have some info was a panta rhei Facebook group but it was all German people, which makes sense, but I couldn't get anyone to help me with the language barrier that was there. Once I get some corals in the tank I'll try again to see if I cant figure them out a little better
