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Thread: Salt or Ozone... that is the question!

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    Eddd's Avatar
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    Question Salt or Ozone... that is the question!

    Hi everyone!

    I am new to pools, never had one, and am taking the plunge very soon. We are in the planning phases now and down to our favorite 2 contractors; final decision coming soon in hopes that we get to swim some this season!

    SWG systems come highly recommended from many friends with pools, so it seams to be a no-brainer, but all of the pool contractor folks I talk to seem to shy away due to erosion concerns.

    Thoughts?

    Thanks in advance,
    Edd
    About to build an in-ground free-from gunite pool in the back yard (no spa). Currently estimated at 19,000 gallons. Likely going with a SWG.

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    Mod Squad woodyp's Avatar
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    Re: Salt or Ozone... that is the question!

    Outdoor pool? SWG hands down. Welcome! Gonna be out your way end of May for the Parrothead gathering!
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    Isaac-1's Avatar
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    Re: Salt or Ozone... that is the question!

    Ozone is nearly useless in a typical outdoor residential pool, It may have a place in hot tubs, and therapy pool as well as other high swimmer volume commercial pools, but in your typical residential pool you get more than enough UV from sunlight to break down these waste products that Ozone helps with.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    Eddd's Avatar
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    Re: Salt or Ozone... that is the question!

    Oh yes, sorry -- OUTDOOR pool

    Here is one of the sketch designs we like (this image has some of my photoshopped notes to the designer).

    Gallacher, Keith2_013_EDIT.jpg
    About to build an in-ground free-from gunite pool in the back yard (no spa). Currently estimated at 19,000 gallons. Likely going with a SWG.

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    Mod Squad tim5055's Avatar
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    Re: Salt or Ozone... that is the question!

    Salt.

    I would suggest eliminating the consideration of ozone for an outdoor residential pool. What are you concerned with corrosion on using a SWCG?
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Eddd's Avatar
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    Re: Salt or Ozone... that is the question!

    Quote Originally Posted by tim5055 View Post
    Salt.

    I would suggest eliminating the consideration of ozone for an outdoor residential pool. What are you concerned with corrosion on using a SWCG?
    I have friends with SWG, (one 9 years, another 7 years, and several others under 3 years) and they have not experienced issues other than some occasional white build up. I am almost definitely going with a SWG, but the highest regarded pool builders in my area (in North Texas) are recommending the Ozone over the SWG. Of course I also recognize that they are 'salespeople' which is why I came here . That said, I did not want to disregard their concern of stone and/or morter corrosion over time.

    At the end of the day, it is not news that salt is corrosive -- then again, so is chlorine. Just doing my due diligence and homework as this is a huge investment.

    -Edd
    About to build an in-ground free-from gunite pool in the back yard (no spa). Currently estimated at 19,000 gallons. Likely going with a SWG.

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    Mod Squad jblizzle's Avatar
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    Re: Salt or Ozone... that is the question!

    If you want to lower the chance of issues when going with salt ... just avoid the soft natural stones that ALL the pool builders down there seem to push. Don't use flagstone for the coping or around the pool.
    Jason, TFP Moderator
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    Mod Squad tim5055's Avatar
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    Re: Salt or Ozone... that is the question!

    Quote Originally Posted by Eddd View Post
    At the end of the day, it is not news that salt is corrosive -- then again, so is chlorine. Just doing my due diligence and homework as this is a huge investment.

    -Edd
    Understood and we agree that folks should conduct due diligence. If more folks dealt with their pool details from the beginning we would have fewer "my pool is green" threads. The "occasional white build up" can be salt, but will appear in almost all pools as splashed water dries an leaves behind all kinds of minerals.

    What are you planning for coping around the pool This is the area that people complain about the most with salt, that it react with some stone coping.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Eddd's Avatar
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    Re: Salt or Ozone... that is the question!

    Quote Originally Posted by tim5055 View Post
    Understood and we agree that folks should conduct due diligence. If more folks dealt with their pool details from the beginning we would have fewer "my pool is green" threads. The "occasional white build up" can be salt, but will appear in almost all pools as splashed water dries an leaves behind all kinds of minerals.

    What are you planning for coping around the pool This is the area that people complain about the most with salt, that it react with some stone coping.
    jblizzle and tim5055,
    Right now the options we are considering for coping are pre-cast (might be wrong term, but it basically concrete) or Oklahoma Flagstone. This is supposed to be a relatively hard flagstone. That said, although I like the look of it, if I am better off going with precast (or something else???) I am all ears!
    About to build an in-ground free-from gunite pool in the back yard (no spa). Currently estimated at 19,000 gallons. Likely going with a SWG.

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    Mod Squad pooldv's Avatar
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    Re: Salt or Ozone... that is the question!

    I'm 3 years in with OK flagstone and saltwater. Unsealed. So far it is fine. There are a few pieces that are flaking off and most look the same as when installed. The worst pieces of flagstone I have are on paths nowhere near the pool. So, it is really all about the stone and picking the right pieces/pallet that seem least likely to have issues.

    But, if you like some pre-cast concrete go with that as you are less likely to have issues.
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    Eddd's Avatar
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    Re: Salt or Ozone... that is the question!

    Thanks pooldv. I have heard that flaking is natural and happens regardless of where it is (walkway, etc). So some flaking and sand release is expected and normal.
    On a different note, do you have issues with shins scraping on the stone as people exit? I have been told this may be another issue.
    About to build an in-ground free-from gunite pool in the back yard (no spa). Currently estimated at 19,000 gallons. Likely going with a SWG.

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