Moving 29 gal Biocube

[gobytron]

If salt comes from the same BATCH, you can expect similar enough parameters from one bucket to the next but same brand?

No way...

Making salt is far from an exact science and this is a pretty big assumption for you to make.

You can probably get by a okay with your logic int his hobby but if you talk to any reefer worth his salt they'll tell you continuity is by far the best thing that you can offer your microcosm.

and a large tank can much better handle a 50% water change as that;s the whole appeal to a large tank, the ability to better manage fluctuations that may be detrimental to a smaller system.

and even in a smaller tank, a 50% water change is not a 100% water change.