STEVE April 1, 2012 Share April 1, 2012 I went to do a water change last night, I've had it mixed, and kept at 78 degrees for about 3 weeks with a pump keeping it moving....well anyway, I look at the water and there is light brown residue everywhere, WHAT THE....? Link to comment Share on other sites More sharing options...
Max Ivers April 1, 2012 Share April 1, 2012 what salt mix do you use? I've heard this occurs with salts that are made using dehydrated ocean water (D+D H2Ocean, Red Sea Coral Pro). I personally use D+D and I do notice a brown residue on my BRUTE container. To prevent any issue I run my new water through a 100 micron filter sock when I pump it into my tank for a WC. Link to comment Share on other sites More sharing options...
GraffitiSpotCorals April 1, 2012 Share April 1, 2012 I notice a brown film buildup on the inside of the trashcan I use but I wipe it down every now and then and never worry about it, I am using instant ocean. Is the water brown or just the inside of the trashcan? Link to comment Share on other sites More sharing options...
STEVE April 1, 2012 Author Share April 1, 2012 Kinda freak'd me out....It's all over the heater, the pump and the trash can. Link to comment Share on other sites More sharing options...
Jan April 1, 2012 Share April 1, 2012 Sounds like diatom algae, which happens in storage tanks. It's no biggy. Check the TDS on your RO/DI water, not the mix. Link to comment Share on other sites More sharing options...
RubberFrog April 1, 2012 Share April 1, 2012 I stopped using redsea because of the brown film. I use reef crystals now and that doesn't happen any more. Link to comment Share on other sites More sharing options...
beatle April 1, 2012 Share April 1, 2012 Odd, RC had the most brown film for me. I'm back to IO which seems "cleaner." Link to comment Share on other sites More sharing options...
Steve175 April 1, 2012 Share April 1, 2012 Reef Crystal often does this both IME and per Reef Central. I have always still just used it. Not an issue. Agree with confirming the quality of your RODI but otherwise I would just use it and not worry. Link to comment Share on other sites More sharing options...
RubberFrog April 1, 2012 Share April 1, 2012 It's strange how we all have different experiences with the same product. Just like our tanks I suppose. Once you find what works for you, stick with it. Link to comment Share on other sites More sharing options...
MBVette April 2, 2012 Share April 2, 2012 I get it a lot with RC, but have never worried about it. Link to comment Share on other sites More sharing options...
STEVE April 2, 2012 Author Share April 2, 2012 Yea...this is my first time with this. I just threw it out and made a new batch....probably not necessary, but o well. Link to comment Share on other sites More sharing options...
Origami April 2, 2012 Share April 2, 2012 Sounds to me like it's a variety of carbonates and impurities that have precipitated out onto the walls and surfaces. I've even had it happen with IO. When mixing water, if I know in advance that I need to boost magnesium (which I determine from time to time by measuring a fresh batch of ASW), I'll add the magnesium first to my water reservoir and making sure it's dissolved before adding in the salt mix. This doesn't completely stop the precipitate, but it can reduce it some. For the most part, though, I don't worry much about the precipitate in my ASW mixing containers. Link to comment Share on other sites More sharing options...
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