Swap old water to new water...!!!

[RoTtEn FinZ]

So,I have 80 gallons total volume of water,how many water changes to complete swap out the old water(prefer 20 % at a time)???..Thanks

 

[Nanoreefer4ever]

Do 20 each weeks or every 3 days should be not too drastic

 

[Jon Fishman]

Are you doing regular water changes, or have a particular reason to replace all of the water in your tank?

 

[RoTtEn FinZ]

Are you doing regular water changes, or have a particular reason to replace all of the water in your tank?

Replace the salt.

 

[Jon Fishman]

Replace the salt.

To go to a different brand? I’m confused. You should be doing 10-20% every week or two, forever..... not one time every year or 2

 

[Nanoreefer4ever]

even to replace different brand of salt you should do it like i said above with 20% u were mention for every week or 2 weeks or u can just suck everything out 99% and put new salt in which could kill everything and you can all over again

 

[Larry L]

20% water change will give you 99% new water after about 21 water changes.

See the calculator at: https://www.hamzasreef.com/Contents/Calculators/EffectiveWaterChange.php

Enter 80 gallons total water volume, 16 gallons water change, 1 change per week, then play with the number of weeks until you get the percent new water that you want.

 

[Randy Holmes-Farley Verified Community Expert]

So,I have 80 gallons total volume of water,how many water changes to complete swap out the old water(prefer 20 % at a time)???..Thanks

Infinite. You can never remove it all 20% at a time.