Was switching out my GFO the other day in my vertex reactor. Got a decent amount of GFO through the reactor that's now in my sand bed. Only real sand sifter/dweller is a conch. Is having the GFO in my display hazardous? It actually looks halfway decent.
Another question. After I noticed this, after a few hours, I took the reactor offline and drained the water planning on reassembling the mesh pads and adjusting the sliding stopper thingy. Very technical, I know. I've let the GFO sit without any water for a few days now. Can I still use it or should I dump it and start with a fresh batch?
Another question. After I noticed this, after a few hours, I took the reactor offline and drained the water planning on reassembling the mesh pads and adjusting the sliding stopper thingy. Very technical, I know. I've let the GFO sit without any water for a few days now. Can I still use it or should I dump it and start with a fresh batch?

