I started my Ecobak journey last night. 1000 mL in a 180. I'm running them in a BRS dual reactor but I'm not able to get much tumbling. There's a little movement, mostly channeling, but definitely not tumbling. My tank is finally having good success so hopefully I won't have any problems from the pellets.
Took a few initial measurements before I started.
Alk - 8.79 (Hanna checker)
Phosphate - .043 ppm (14 ppb Hanna phosphorus checker converted to ppm)
Calcium - 460 (API)
Nitrate - 0 (API - not much low range on the API kit. 0 or 5 ppm are the first 2 choices)
I am also running a single BRS reactor of GFO. Hopefully down the road, I will be able to phase this out.
-Josh