Using real sea water

[mailoo]

I have some land next to the sea.
As it is outside the USA I can easily get government permission to pump up sea water to my property, many shrimp farms here do the same.

So imagine you had an unlimited supply of fresh sea water to flush out your tanks, and you were prepared to do maybe a 50-100% water change every single day....

Could I

A) Have no other filter , other than a sand bed

B) Have tanks that were outside getting hit by direct sunlight most of the day

I posted this here as i would be using giant tanks, 5 feet deep and maybe 2 foot wide and then long, like a wall

 

[Achilles Torben]

You can use a pump like a return pump that run 7/24 and the water that is to much go back to the ocean.
So you did not need a filter
Change as much water that temperature does not rise

Greetings Torben

 

[steallife904]

ya I would have that thing running 24/7. Non stop water change. Just have the overflow drain back out to sea! Should keep you levels stable and temp.