salt for a 20000l reef pool

[Reefsystem]

I want to make a large reef pool in my backyard where it will receive full sun and will be open to the elements.
My only concern is water changes.

Could I use pool salt and mix it with RO/DI , to make my
water changes.

 

[Siffy]

What's in it? Would you use it on your regular tanks?

 

[Reefsystem]

Ill just stick to natural seawater

 

[rwbogard]

No, you cannot use just pool salt, as that salt does not contain the correct blend of elements. Pool salt and pond salt are almost identical in nature, in fact you may use just water conditioner salts to achieve the same outcome. You could use water softener salts and add back calcium, magnesium, carbonate, etc. to the proper levels, and it may be slightly cheaper than buying IO, but after you consider the time cost it's definitely not worth it. Additionally, unless you invest heavily ($$$) in proper filtration and UV, you will have rampant algae issues. You could, however, offset this with a balanced ecosystem of tangs, crabs, snails, etc. Still, this would be pricey.