I think you are on target to avoid the small holes! You want the water to
move slowly through the pond (for bacterial cycle and settling) and to exit
on the opposite side from its entrance. A slow circle would provide a kind
of vortex, if it circulates all the way around. Otherwise, the tee would
distribute it nicely. Splash would be nice, but probably comes as the water
re-enters the pond (how does it do that?) Lots of plant roots will also
slow the flow to allow settling.

Your VF has about 450 gallons in it. How many gallons per minute are you
feeding to it? That will affect the settling time. Can you reduce the flow
into the VF and return part of your water over a falls?

Good luck.

Jim

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"Bill" wrote in message
om...
What would be the best way to distribute the water input in a 500gal
veggie filter? The filter is 5'x6'x2' and I have plumbed in a 2' pipe
along one side 2" off the bottom. Also, I have installed a 3" bottom
drain.

My initial idea was to run 2" pipe along the bottom with 3\8" holes
drilling in to it. But because I run a open impaller pump, I'm
concerned that these will get clogged. Perhaps just a tee at input to
direct the water to the left and right?

Thoughts and suggestions are much appreciated.

Bill