Mike, BB was around for years before the sps stuff. Like Paul, I did the undergravel filter for a while. On the BB's we used to use 2 inch PVC sliced long ways and set under the rock to keep it off the glass. On one I had a sump and had the return go to a manifold with openings at each half pipe to keep stuff from building up under the pipes.
I can say we experimented a lot more back then. Few could say they knew a whole lot about it, so it kinda was the norm. Everybody around here spent time checking other peoples stuff. I remember seeing my first surge machine. I thought, my wife would kill me if my tank was that noisy. I also remember the first time somebody brought live sand up here. We were like kids in a candy store.
I can say we experimented a lot more back then. Few could say they knew a whole lot about it, so it kinda was the norm. Everybody around here spent time checking other peoples stuff. I remember seeing my first surge machine. I thought, my wife would kill me if my tank was that noisy. I also remember the first time somebody brought live sand up here. We were like kids in a candy store.