How Often/How Much do you change Water?

[m0nk]

Originally Posted by DrTITO
I live in the extrem southwest and I lose a 1/2 inch of water a day from the dry air and heat even in the winter. How will removing water help me if it keeps evaperating? Sould I still change my water?
Yes, the evaporating water doesn't take any of the "junk" (fish poop, left-over food, etc) with it, nor will adding RO water as a top-off replace the trace elements that are in the salt mix.

 

[bullitr]

i have mixed sps on my tank i change only 15-20% monthly. i maybe i should do more but the corals are doing great

 

[snakeblitz33]

Kind of funny question. I once did an experiement and did not change my water for 8 months. I would have gone longer, but a couple of my clams died.
I generally do a 50% water change on my personal tanks once every 6 months.
On my clients tanks, I change the water bi-monthly or once a week. (mainly because that's how I make some money) Regardless if the tank needs a water change or not.

 

[reefkprz]

I do 20% minnimum once a week some times as much as 50% (about once a month) and here is a link to how I do them if your interested
https://forums.saltwaterfish.com/t/292237/how-to-do-a-proper-water-change-by-reefkprz