Drain tank without sump

I have a 210G that I'm setting up. I want to setup a drain line that will only drain 50% of the water into drain line, not sump or anything else.
I want to be able to cut off the siphon with ball valve and restart it with ball valve. I like for it to be over the tank because I don't want to drill.
Is this possible? I can setup a pump and plumb it to pvc drain line, but to leave the big pump in the tank is too hideous.

I also want to mention the tank is about 10 feet above the drain pipe so gravity feed can be utilize, just not sure how.

Slick Fish said:

Are you going to have a pump on the drain? This would seem to be the easiest way I can think of.


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what do you mean. I kinda edit my thread in case you miss that part. I can plumb a pump in the tank and into the pvc drain line, but a big pump in the tank is just ugly.

is there a way to keep the siphon lock in ?
also, can you use U elbow instead of 90 degree elbow?

thanks man. that video was very helpful.
the two pipes that matches in height, do they have to be a certain length or can it be shorter so I don't have to show too much in tank?