I am planning a 180-280Gal tank, depending on the cost of importing the acrylic, or if I just use glass.
What I am thining of doing is to pump water in from the ocean, through the tank and back out again as I am only about 20ft from deep water. This way I would only need mechanical filtration and carbon on the in water supply and the water in the tank should remain fully balanced, without worrying about complex filtration, evaporation or anything.
I have written for approval from my Condo association to do it, but if they decline, I was going to do weekly water changes directly with the ocean. I was going to plumb in 2 PVC
lines and have a pump and external filters in my garden and then have the ability to drain the tank and add in fresh seawater. Would that simplify things or should I just try and get a fully balanced reef tank. The fish I will be keeping will be locally caught wild fish, so there are no water or temperature considerations by pumping in fresh saltwater.