Kiloliters or gallons depending on sizeo f the pool.
the fish tank
a big swimming pool and plane fuel
Length of my room Width of my road Length of a swimming pool Height of Mt Everest (not that I would measure it!) Depth of the local lake.
the amount of water in the pool (volume) somthing like that
A zero entry pool is a swimming pool with a section that slopes from water level downwards, allowing people to wade into the pool.
The anwser to this QuestionWe would use a termometre to measure , the temperature of a swimming pool .A thermometer.
With a ruler.
Improper water chemistry - stay out of the pool until they learn how to properly maintain a swimming pool. Last measure would be to test the water yourself for proper chemistry.
gallons
The easiest way is with a floating thermometer.
Meters.
Acidic
the fish tank
Unless you have an ozonator, which would inject ozone (O3) to sanitize, there are no gases added to the water of a swimming pool.
You would use meters.
I would not suggest a water trampoline for your home swimming pool. You can not control the trajectory when you jump and injuries could be caused if you strike the pool skirt.
You would measure the swimming pools length, width and depth to determine how many cubic feet of water is in the swimming pool. Length x Width x depth = cubic feet. Then measure the mass of 1 cubic foot of water by building a box 1'x1'x1'. Once you know the mass of 1 cubic foot of water - you'll know the mass of the water in the swimming pool.