Sundance Spas Optima
Quick answer
The Sundance Spas Optima holds about 410 gallons of water and measures 89 x 89 x 37.5 inches, seating up to 6. Full of water and people it weighs roughly 5,473 lb.
- Water volume410 gal
- TypeHard-shell
- Dimensions (in)89 x 89 x 37.5
- Seats6
- Water weight3,419 lb
- Empty weight944 lb
Chemical doses for about 410 gallons
Computed for this tub's water volume, so you can dose without doing the arithmetic. Amounts are ounces by weight.
| To do this | Chemical | Amount |
|---|---|---|
| Raise total alkalinity +10 ppm | sodium bicarbonate | 0.98 oz |
| Raise free chlorine +3 ppm | dichlor granules | 0.29 oz |
| Raise bromine +3 ppm | bromine granules | 0.27 oz |
| Chlorine shock (+10 ppm) | dichlor | 0.98 oz |
Open the dosing calculator for this tub
Add in small steps with the pump running, wait, then retest before adding more. Never mix chemicals together, and always follow your product label, which wins over any calculator.
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How much does a full Optima weigh?
Empty, the Sundance SpasOptima weighs about 944 lb. Its 410 gallons of water add about 3,419 lb, and 6 bathers add roughly 1,110 lb more, for a loaded total near 5,473 lb. Make sure your deck or pad is rated for it. Work out any tub on the filled weight calculator.
Keep the water right
A 410 gallon tub doses in small amounts, so a kitchen scale and small additions beat eyeballing it. Test, balance alkalinity then pH then sanitizer, and use the dosing calculator sized for this tub. Start with test strips and a chemical kit.
Source
The 410 gallon figure is from a major retailer or authorized dealer listing: emeraldpool.com. Sundance 880 Series. Dealer page sourced from manufacturer data feed; full volume 410 gal. Seats 5-6. Capacities vary with how high you fill and with seats and footwell; confirm against your own manual or a metered fill when precision matters.