GFO media in sump

[an411]

I think that somehow I am not sure exactly how this happened but I did notice that some GFO got out of the reactor and is not sitting in my sump I am going to figure how that happened but my question is. How bad is this for the tank. I am going to try to remove it tonight but I also noticed that I am starting to get some cyano on my sandbed. I am starting to wonder if that has anything to do with the GFO in the sump?

[BigJay]

GFO escaping a reactor is pretty common. It shouldn't be causing any cyano issues, only excess nutrients can do that. In any event I would siphon out as much of the stuff as possible without killing all of your sump's microfauna.

1. Reduce the flow through the GFO reactor to a trickle. There should be an empty space in between the fluidized media and the top sponge on the reactor. The top of the media should be agitated slightly and tumble only a little.

2. Use less GFO in the reactor. It shouldn't be filled more than 3/4 of the way to the upper sponge.

3. Buy the pelletized GFO instead of the granular stuff next time, the pellets are easier for the reactor to hold inside. You can support a little more flow without the stuff blowing all over the tank.

I hope this helps.

[an411]

Thanks Bigjay very helpful I have a few things to check for once I get home. I am also thinking that the cyano may be caused cause i cleaned my powerheads and I am thinking that I may have not positioned them correctly and i am not getting that much flow by the sand bed.

[Reefer Brian]

Big Jay is correct, and the flow is always a major factor when it comes to cyano forming. With the use of the GFO and high flow the cyano should be at a minimum.