We did 16x16 sections in three different locations.

The only reason we chose that size was it ended up being cost efficient because we already had the wood for framing it up. Any size will work. The smaller pea gravel is easy for them to move & build. Putting down some type of landscape fabric or plastic sheet allows the pea gravel to avoid sinking into the mud/muck.

Our bluegill love them. For some reason they are partial to the walls...i think they feel the protection. The entire area quickly fills up with beds after those wall spots are taken.

I am certain bluegill will spawn without these pea gravel beds. But I also know they prioritize them for a reason. I've read about good water circulation and oxygen to eggs and that does make sense. Maximizing bait is always the priority in a good bass pond so I'm glad we did the work.

Ephesians 2:10