My gfo struggles

[Aluco]

I'm using kolar labs gfo and ever since this newest batch I've had a terrible time getting it to tumble. It's plumbed into the return line directly with 1/2" push to connect and a ball valve. It doesn't seem to matter which reactor I use, I've tried 2, and adjusting the ball valve doesn't seem to get it going.. is it possible my gfo is a bad batch, too fine and won't tumble? I never had issues with it until I got this new jar of it..

I don't mix it with carbon and I can visibly notice water and glass clarity isn't as good when gfo isn't working right as well as po4 being more elevated. Any help with stubborn media? Ty

 

[blaxsun]

As long as water is passing through it you should be fine. Maybe you have too much flow and it's just pressing it against any sponge/strainer?

 

[Aluco]

Hmm, well it surprised me to find if I turned the return pump almost all the way up it begins to tumble so maybe it wasn't enough flow idk