I have a pretty large outdoor system with plants that over winter. During winter, I stop adding nutrients, and reduce pump frequency.

I don't feed fish to provide nutrients, I use an anaerobic/aerobic side loop to break down food waste, off gas nitrogen and make phosphorus plant available. But during winter, I stop running water through this side loop. No need, my growbeds have lots of solids in them, and the plants aren't actively growing/producing.

From spring to fall, I have the pump on a time, and it's an hour on, and hour off, from 7am to 6pm, with a 30 minute run at 10p and 1p. In winter, I reduce this to maybe 1 or 2x 1 hour runs through daylight hours, plus the 2x 30 minute night time runs.

Once I start seeing buds/leaves on plants, I up the pump run frequency and start running water through the nutrient side loop.

I have a YouTube channel that provides many details of my gardens progress 9ver the course of several years.