Odds are they won't be the only ones to find the feeder. You now have a choice to make. 1) Continue feeding and get the tilapia big & fat for maximum breeding now, increase your numbers, then make a massive dent later on down the line by turning off the feed. 2) Hit the filamentous hard now by turning off the feeder. 3) DO NOTHING
My feeder will stay on, but I'm interested in weight gain 1st, filamentous is a distant 2nd.