Master Spas Twilight TS 7.25
Quick answer
The Master Spas Twilight TS 7.25 holds about 305 gallons of water and measures 84 x 84 x 38 inches, seating up to 7. Full of water and people it weighs roughly 4,758 lb.
- Water volume305 gal
- TypeHard-shell
- Dimensions (in)84 x 84 x 38
- Seats7
- Water weight2,544 lb
- Empty weight919 lb
Chemical doses for about 305 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 | 0.73 oz |
| Raise free chlorine +3 ppm | dichlor granules | 0.22 oz |
| Raise bromine +3 ppm | bromine granules | 0.20 oz |
| Chlorine shock (+10 ppm) | dichlor | 0.73 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 Twilight TS 7.25 weigh?
Empty, the Master SpasTwilight TS 7.25 weighs about 919 lb. Its 305 gallons of water add about 2,544 lb, and 7 bathers add roughly 1,295 lb more, for a loaded total near 4,758 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 305 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 305 gallon figure is from the manufacturer's published specification: www.masterspas.com. Manufacturer site. Twilight Series. Capacities vary with how high you fill and with seats and footwell; confirm against your own manual or a metered fill when precision matters.