How to do a reef tank water change

[kien]

Your approach is correct. It really isn't that much different from fresh water. Remove old salt water add new salt water ( of the same salinity and temperature).

[lastlight]

What's with adding Prime? Isn't that for tap-water? Or are you using tap-water?

[DiverDude]

I would use RO/DI water but some people get away with tap water and prime (depending on your local water).

One thing I learnt fast is to forget about pouring water into a reef tank unless it's a small quantity. Even in my little tank, I do 5 gals at a time and it's to heavy and you have to pur too slowly to avoid stirring up all the sand.

I siphon the water out and pump in the new water after it's circulated for at least a day in a bucket.

[Flash]

yup I use tap water! have been for 5 years! never had a problem! We also use tap water in the store without a problem!

[monocus]

i always add my water into my sump return-that way it doesn't disturb the display

[skabooya]

I use tap water as well. I remove whatever water out of the tank. Fill up buckets with tap water and mix in the salt. Test salinity then dump it in.
I have FW tanks too and its all the same, except for adding the salt.