24 watts divided by 8 outputs means 3 watts per line (sort of). Most small single pumps are about 2.5-3 watts. You can screw the outputs closed if you fiddle around with them so yuo dont need any ghetto way to plug them. The Eco 8s, despite their "24 watt" ratings, just arent very powerful in my opinion. I use the 35 watt single output and then I T it to whatever I need. It can easily power 16 buckets with a crapload of bubbles...but its loud!!!!