Performing water change by the skimmer

MBruun

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Performing water change by the skimmer

One way to perform water change is using the skimmer to overflow and replacing the skimmate with new saltwater.
But is it a good idea in the long run ?

Dong Zou mentioned in a episode of "Beyond the reef" podcast with Adam from Frag Garage (I think it was) that it was very efficient to perform WC using the skimmer to overflow.

Performing a normal WC by replacing let's say 10% water is said to be ok in regards to adjust the ion balance, but how to know or measure how much is actually required ? Which parameters will show if your WC is sufficient ?

Which pitfalls or benefits do you see using the skimmer to remove the water ?


I do WC weekly by the skimmer and it makes the WC process a lot easier for me, as I'm changing less water than I use to and I don't have to turn off anything. The amount of work and effort is less and once the process is started, it runs by itself.
I use to prepare 90 liter the day before -> turn off all, but light and circulation -> empty the sump by a pump -> pump the prepared water back and turn everything back on. (My 700 liter tank is 15 meter from the bathroom...)
Using this method I prepare a bucket with 30 liter water -> connect a hose to the skimmer, and let the skim mate flow to a container -> add my spare ATO to the 30 liter bucket -> turn of the fresh water ATO -> turn up the skimmer to let it slowly overflow and let it run for like +3 hours - when done turn the fresh water ATO back on.
I admit I'm a bit lazy, but I like a "work smarter not harder" approach.

I wrote this question in another thread about WC or no WC, but think it's better of in it's own thread.
 

Randy Holmes-Farley

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The pitfall is that the volume exported is hard to control and you may have to babysit the skimmer.

It’s a fine way if you can overcome that issue.

If you are looking for easy, use automatic water change. :)
 

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