No sump

[RLeclerc]

What would happen if I were to leave the sump of for about a day. They would have flow from koralias but no filtration.

 

[davocean]

Most likely fine, many have to do this at some point for maintenence or sump rebuild/swap.

 

[cloak]

You'll be ok. The necessary bacteria pretty much covers anything that's submerged in an established tank, so a little flow is really all you need.

 

[Toddrtrex]

Might have temp issues (( if you keep your heater in your sump )), and it is starting to get cooler where you live.

 

[crodger]

Other than your heater you will be fine

 

[DevinWolfe]

You could always move the heater to the DT while doing what you need to do. I would also be sure to let the display drain to its natural minimum water level, then displace a little bit more water just to be safe.

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[Nanz]

You might want to also keep the phosband/carbon filter on just to keep water moving in the sump. Stagnant water can cause problems.

I have done this the two times I had to replace ruturn pumps.

 

[Palting]

You might want to also keep the phosband/carbon filter on just to keep water moving in the sump. Stagnant water can cause problems.

I have done this the two times I had to replace ruturn pumps.

Yeah, I would think a full 24 hours of stagnant water could lead to some issues. Your DT should be fine with the Koralias. I would get a small pump just to circulate the water around the sump.