Heating an RO/DI 100G Water Tank? (Show me Yours)

Discussion in 'General Equipment, Hardware, Filtration' started by Rhinotronics, Dec 17, 2017.

  1. Rhinotronics

    Rhinotronics Member

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    Hey Guys and Gals,
    I am about to start setting up my RO/DI Water storage room and was wondering about heating. Couple of questions... First off I live in Nashville Tennessee area so you know the climate. I will be running two 105G Water storage tanks. Tall and thin.
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    What type of heater should I use? Should I heat both tanks? Or is heating the RO/DI water tank pointless? I will be running a 10G ATO So I am not sure how often I would be adding large amounts of RO/DI water to the tank. I am using the Cobalt 300W NEO-THERM SUBMERSIBLE HEATER for my main tank and I choose this after much research and feel this is the best for my tank, but wondering if it would be good for a 100G Water storage tank.
    207705-cobalt-neo-therm-submersible-heater-b.jpg
    Also I want to see how you guys mount heaters in these type of tanks, or do you just let them hang inside. Keep in mind also the reason I am asking with the 300W NEO-THERM SUBMERSIBLE HEATER is that it technically is two 150w heaters tethered together, SO I would need to mount both. Which is also making me question if that is a good choice. Also what Thermostats do you run for making sure your heater is working for your Water Storage tanks? Is there anything else I am missing when it comes to setting up a water storage room?
     

  2. Quercus

    Quercus Member

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    I just use a cheap heater and power head in mine. Just drop them in and let them hang or rest on bottom. I only heat and circulate my salt water mixing tank. Try to get both as close to bottom as possible since the salt tank will not be full all the time.
     
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  3. LobsterOfJustice

    LobsterOfJustice Well-Known Member

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    Definitely no need to heat the RODI water. Where are you setting up this station - in a garage, shed, inside? I would only heat the saltwater if you’re mixing it in a space that is not climate controlled, and even then it might not be necessary in your climate.
     
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  4. redfishbluefish

    redfishbluefish Stay Positive, Stay Productive Staff Member Team R2R R2R Supporter R2R Excellence Award Build Thread Contributor Article Contributor NJRC Member

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    I'm puzzled....you have a 300 W heater for your DT....telling me maybe a 120-180 gallons, or there about. But now you want to not only make 100 gallons, but also heat all of it??? Are you planning on 100 gallon water changes? That's why I'm puzzled. Only heat up that what you need.

    Now as far as heating water, you don't want to heat water until you're ready to add it to your tank. To restate this differently, mix your salt in unheated water. It's counterintuitive, but it mixes faster/better in cool water.....blame it on the calcium part. Once the salt is dissolved, then you may heat it up.

    If you're in no rush to use this 100 gallons, a 300W heater would work. If it were me, I'd be using a 1000W heater. JMTC
     
  5. haanstang

    haanstang Well-Known Member R2R Supporter Build Thread Contributor

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    I agree with you cooler mixing is faster but Salinity changes with temperature so when you’re mixing the salt you have to have it to the same temperature as your tank to test it accurately. Depending on the temp in my garage I will turn the heater on when I start mixing and when it gets to 78 I may have to add more salt or more water depending if I was close with my initial scoops of salt. I also found that when my garage is around 60 degrees I can raise the temp to 78 just with my external panworld pump and not need the heater at all.
     
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  6. redfishbluefish

    redfishbluefish Stay Positive, Stay Productive Staff Member Team R2R R2R Supporter R2R Excellence Award Build Thread Contributor Article Contributor NJRC Member

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    I can't agree with you more @haanstang about SG and water temperature. On cool water, your SG will be higher when compared to heated water. So here's what I actually do when making water.....I know that 15 cups of salt in 25 gallons of water will get me very close to the SG I want when I heat it up. Once dissolved I heat it up and measure SG. Some times it's spot on, and other times I might need to add up to 1/2 cup. And that's it!
     
    Last edited: Dec 17, 2017
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  7. Dilan Patel

    Dilan Patel Valuable Member Build Thread Contributor

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    I live in Nashville to lol. DO you shop at aquatic critter? I know this has nothing to do with your question but its not often you see Nashville people on here.
     
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  8. Daltrey

    Daltrey Valuable Member Build Thread Contributor

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    I don't heat mine or use a powerhead. It is in a closet next to a climate controlled room though. I have an external pump hooked up inline that I use to mix my salt for a couple hours before I do a water change.

    Other than that it's hooked up to a float valve in my sump that tops off the water.

    20171113_125906.jpg

    20171122_111626.jpg
     
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  9. haanstang

    haanstang Well-Known Member R2R Supporter Build Thread Contributor

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    That’s better than how I do it. Lol. I may have more time involved in my way but sometimes you need to get out of the wife’s domain.
     
  10. Rhinotronics

    Rhinotronics Member

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    I am setting up the water storage in the laundry room. I have heard and read that you want to hear the salt mix so that when doing any kind of major water changes the temps match. So I’m not throwing colder water into the tank.
     
  11. Rhinotronics

    Rhinotronics Member

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    I have a 265g tank. I have a sump that is about 80-90g that the heater will be in. I will be using a pump to circulate the mix. Does that help?
     
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  12. Rhinotronics

    Rhinotronics Member

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    Yes I’ve been a few times. I’m actually up in Mount Juliet, so it’s about a 30 min drive there. But yep, new to the area. Hit me up some time. Would love to talk shop or just meet people in the hobby.
     
  13. Rhinotronics

    Rhinotronics Member

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    Very nice set up. I hope mine looks that good when I’m done.
     
  14. redfishbluefish

    redfishbluefish Stay Positive, Stay Productive Staff Member Team R2R R2R Supporter R2R Excellence Award Build Thread Contributor Article Contributor NJRC Member

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    I'm guessing in Florida you can get away with less wattage. However, that said, I'd be happier with two 300W heaters (if not higher), for that volume of water.
     
  15. WWIII

    WWIII Valuable Member R2R Supporter R2R Excellence Award Build Thread Contributor LMAS Member

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    I don't heat my ato water, as it's added so slowly to make any difference. When I mix up 40 gallons of saltwater to do a waterchange I just throw a heater in for a few hours before I use it. I use an aqueon pro vs a glass in the containers, so when it breaks I don't have to fish the broken glass out.
     
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  16. WWIII

    WWIII Valuable Member R2R Supporter R2R Excellence Award Build Thread Contributor LMAS Member

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    Just in case you need another visual... 20171218_191128.jpg
     
    Last edited: Dec 18, 2017
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  17. Rhinotronics

    Rhinotronics Member

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    But the heater is going to be in the 80g sump. So it’s not having to heat the whole 265g tank at once. Yes in FL things were different, which is where I bought it all.
     
  18. Idoc

    Idoc Valuable Member R2R Supporter R2R Excellence Award MTRCMember Build Thread Contributor

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    If you haven't yet...Check out Emerald Bay in Old Hickory and 7 Seas in Hendersonville. Both are run by great guys and always helpful. Aquatic Critter is the biggest fish store and also very nice.
     
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  19. Rhinotronics

    Rhinotronics Member

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    Yep. Spoke with both of them last week.
     
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