broncofish
Active Member
Look at the first picture thats a durso, it is a standpipe that greatly quiets the noise, it raises the water level in the overflow box so there is less waterfall noise, and the designe gets rid of the sucking noise. As far prefilter, I don't use one. Everything flows though my system. The only filters I have are on my power heads. I have a little piece of filter sponge covering the intakes, that catches any free floating food, and I only have to clean them once a week, and it takes about 2 minutes.