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    New member with Green film/scum at waterline of a Master Spa

    OK, so I removed the panel, and found a "Balboa" control box, that appears to have the heater tube built right into it. I have included two photos, one is from the top of the control box, showing the model number of the entire thing, and the other is of the heater itself. With regards to the...
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    New member with Green film/scum at waterline of a Master Spa

    Thanks JoyfulNoise. It is a 2015 Master Spas, Twilight series, model TS- 87.3. 300 Gallon. I will get busy answering your questions about the RO system and the spa heater.
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    New member with Green film/scum at waterline of a Master Spa

    Thanks Newdude! Shampoo and any other cosmetic products have been eliminated from the equation, since it's just my wife and I, and she has stopped using the spa after being grossed out from the slime situation.( the spa has been drained, super-cleaned and refilled with all new chemicals three...
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    New member with Green film/scum at waterline of a Master Spa

    OK, so I had a sequestering agent called "metal gone" in my chemical cabinet. I used it last night. Here are some photos from this morning, 12 hours later. As you can see, I still have the same green film on top of the water in the skimmer, green line at water line, and little green chunks...
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    New member with Green film/scum at waterline of a Master Spa

    OK I will. Thanks. Any particular brand? Also, what part (or parts) of the guts of my spa would be made of copper? It's expensive, so I would assume that most spa companies stopped using it?
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    New member with Green film/scum at waterline of a Master Spa

    When I first fill the spa, I use When I first fill the tub, I need just a little PH up, and a bunch of calcium hardness increaser. The photo shows the ones I use. Within a couple hours of refilling my tub, my chemistry is great and my chlorine generator is making chlorine. Water clarity is...
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    New member with Green film/scum at waterline of a Master Spa

    Thanks for your reply RD. Filters are only six months old, and I keep them clean, so no smell. I will try to post photo now. (Never done this before). Here is photo. Note: water in spa perfectly clear. Green gunk only at waterline.
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    New member with Green film/scum at waterline of a Master Spa

    Good afternoon all. First time posting to any forum of any kind, but this gunk has got me ready to say a bad word, probably many! Great to know you guys are out there and willing to help, so thanks for that! I don't know if the following is too much or too little info, but here goes. Background...