Silly question about reactor

[Proteus]

So I have a MR1 that was full of hydroton. I took it off line on thirsday as I needed the pump for my ato.
Now I realize the media will be full of dead organics and I have new media for it.
But I contemplate putting it online or not

The reactor hold 2.6 liters and I was wondering if that amount is worth running? I did not see any down fall when taking offline.

I have 25 lbs of rock in tank and 10 lbs of rubble in sump

What do you think. It's one more piece of equipment. One more plug in