When explicitly asked whether water changes are needed when using all for reef, this is what Lou said. Note the answer applies equally to ALL methods and is not a specific requirement when using All for Reef.
Question:
@Lou Ekus I was wondering if you can spare a few minutes of your time to share your thoughts about water changes while using All-for-reef.
Lou’s answer:
My opinion on water changes may differ from some. In fact, if you ask 12 people what they think of water changes, you will probably get 15 different answers!
Mine is this... I don't believe that ICP results, trace element concentrations and nutrient concentrations, are the ONLY reason to do water changes. Always, 100% of the time, on my systems, whenever a water change was done, the animals all looked happier the next day! Even when I could find NO apparent measurable difference between the pre and post water change water. I have a theory, of course one that cannot be backed up yet by some concrete scientific explanation, that doing a water change is a lot like giving your corals a "breadth of fresh air". I believe there are actual physical factors, that we cannot yet measure, that come into play when you have added new, clean, freshly made salt water to a closed system that the animals have been living in. I can't explain this 100%. But I watched it happen time after time with NO variation. There are still many things in reef keeping that we cannot fully explain. I believe this is one of them.
So I am a fan of periodic water changes. I am not one of these folks who thinks you need to do 10-20% strictly, every 2 to 4 weeks under penalty of torture! But I do believe that a "button" that can be pushed, that ALWAYS makes your animals look happier, should be pushed once in a while. They are telling that by the way they respond!
I have probably said a number of things that will be jumped on in this post. So I will say this... this is just my opinion and the advice that I have given, with much success, for many years. If you want to use a different approach, go ahead, it will probably work great. But you asked, so I'm tellin' !!!
Yes you are correct, looking more into it, apparently it’s because calcium test kits are more reliable? (Not in my experience they are far less accurate), they say you can use either but to adjust based on calcium. To be fair, their instructions are a little mixed up, as they start by saying...
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