Hmmm I don't recall saying you're wrong, you asked a question and I answered it. The link was just general info on the subject which I insisted you read after you failed to understand the concept of how removing & replacing water reduces contaminants. Just look at one of the last graphs for example, the one regarding sulphur build up. In addition to sulphur many other elements and contaminants will act the same. Without water changes what is your plan to deal with such contaminants?

This is getting to be a pretty heated discussion, how about we add some tangs into the mix... How many times should we do water changes in a 20g with 3 tangs? :eek:

On a more serious note, Im getting nice growth from everything in my tank and have so for the last 6 months since moving to a larger system and not doing regular water changes. I did weekly water changes before that and honestly had more issues with water changes. Now with a large cleanup crew and my sump and overflow stuffed with macro algae, everything looks happier than ever. Though i do add more than a salt bucket full of ro water every week do to evaporation.

I do a minor 5-10g water change when i clean out my sump though, which includes cleaning out my skimmer, carbon, and phosban reactor but thats every few months, lol.

I think my vodka doing is a big help as well.

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If I am not wrong, why you here? :lol:

http://www.advancedaquarist.com/2004/4/chemistry

I would minimize it....or not even introduce it by using quality additives and not stuff located under my sink.

In the desert you can remember your name
'Cause there ain't no one for to give you no pain
La, la la la la la la la la......

Much of the rock is 4 years old, the seed rock (about 5 pounds is about 6 years old). the rest (about 30 percent) is about 1 year old. The tank itelf (sump included) is about 5 months old but EVERYTHING was transfered from the old tank....so on average.....3 years old.

Some of the corals are 8 years old. Been through 5 transfers!

My Soft corals have exploded. SPS is about the same since I stopped changing water. But yeah, I will be doing a small change soon, so stablize salanity and get the ditrious out of the bare bottom sump.

Because 1 I was here first and 2 because you asked the question why we need to do water changes and then continued to asked pretty much the same question over and over, so at this point I have no idea why.

So your solution to minimize contaminants is to add things like calcium chloride? Where does the chloride go? And how exactly do you think thing like sulphur and copper get in your water? Once again you have ignored everything put in front of you that you requested.

Best of luck, I've giving you what I know so no point repeating.

Well geez, they havent affected me yet, nor have those people claiming to have no done water changes in many months...but...

Sulphur, explained.

copper= Use RODI and don't use some medications.

Cloride = build up is slow... or use calcium reactor?

Yeap as I figured you have no idea... Again best of luck.

You asked me how do minimalize/deal with it..so I answered. Obviously, you are the type of hobbyist who prefers to "preach" and "offer" (I use that term loosely) advice. Not really a discussing and debating kind of guy are ya