I saw the bubbles out of the water yesterday, over by the filter intake. But only there, not where I was sitting. Barely going out about 2-3 inches before popping.
Sundance 880 and 980 series have a feature where the air blower for the air injectors (soft tissue massage) has a compartment for a scented cartridge. The scent is in the bubbles, not the tub. And you can smell it.
I have one of these & a 5 Gal bucket if I need it.
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We're both tests done in full sunlight w sun at back? Test tube at waist. Pour to each line and look for the dot. CYA is 10s only.
That's why I use dichlor to get my CYA. I add it slowly during the first week or so until I get to 30. I use effects of adding for numbers.
Your going to have to figure out your loses when not in use. But you should add after every use to eliminate the bather waste. Testing will help you figure out what you need to add.
What are the code required clearances in your area? You have 4" clear on both sides. You need room in the back for the cover to sit behind the spa. Where are the steps to get in going to sit? I don't think you'd get an inspector to sign off on the location. Master SPA LSx 900 is 9'-0" x 7'-10"...
Inspector might want the spa 30" away from that window, minimum. Hope the long sides are running N/S. Can you add to the pad?
You'll need entry & motor access on the same side of the spa.
Start looking into cover lifters that don't need side access.
My electrician advised on 30" all around...
Pad out in the open? What's adjacent to the space. You need to account for the cover and lifter, steps to get in and free area in front of the steps.
This would fit on the pad with steps on either side of the 10' length.
On mine the speaker would be behind the headrests and out from under the cover. So they are not in the hot humid air space all the time.
I just have a small bluetooth speaker "mini h20" That I sit on the waterfall. Actually works pretty good...