- Joined
- Feb 23, 2015
- Messages
- 399
- Reaction score
- 196
the cobalt is a great pump so flow is not the problem. I kind of agree with Windy D but mine would tumble gently when I first start up then it would settle on top within a day or so and not a spec would be floating after that.
I've had the same experience. This was mostly true when I used to much GFO and filled it 2/3 of the way full. When I put less in it did the same thing but the very top layer would tumble still while the rest remained in place.


