How to keep screen algae alive when out of tank for a couple days???

I have to take my HOG.5 UAS out of my tank for a day or two to fix the magnets and re-add some clear silicone to seal the magnets. The silicone needs to be out of the water for 24 hours to cure.

If I can keep the screen submerged when I do this, but I'm curious if the water needs to be heated, have flow, etc. to keep the screen alive. I would not be using the bubbler with my air pump at this time or running the light.

Use a heater on the silicone; can cure it in one hour. Don't melt the screen or wires though.

To keep a screen alive, it just needs to be in water.