Looking for a larger tunze controllable pump. I believe the 6205 is no longer sold and the 6155 has basically taken its place. The 6255 is a borderline beast but that's just about what I need. Currently have 2 x 6105 and a 6150 (stream 3) on my 300DD and they work fine but with the larger colonies it's going to take a bit more flow to keep everyone happy. Let me know what you have. Feel free to text at 81zero-8seven5-0001. Thanks in advance!