Algae will develop in untreated water turning the water green and or foggy. If it is a swimming pool, and you don't mind, it can be treated with chemicals that you can get at the big box hardware stores or a pool supply place. If the pool is for fish you can use a biological filter and pump system.
Algae
if its green and you have frogs living in it you need to drain it. If it just needs to be vaccumed and the water is foggy, Chemicals will clear it up
Not likely
The only reason the pool would turn green would be if the Baquacil is not entirely out of the pool and it reacts with the Chlorine.
It would cause excessive mud and the swimming pool would sink slightly. It would only cause a sinkhole if there was a hole underground under the pool.
The color of the pool is no problem at all. If the water is green, who in his right mind would jump in?
The chlorine is reacting to minerals in the water.
When a pool turns green, the cause is the build up of algae. To remove the algae, chemicals will need to be bought to restore the PH levels in the pool, killing the algae.
I am not sure why this has not been answered. The most common reason for the green is algae growth. If you put on a solar cover and ignore pool maintenance, then the algae will grow as the water heats and when you remove the cover, the pool will be green
Sometimes I think it can but normally it goes a green colour.
You must first determine the cause of the green water - then rectify that. The green water could be the result of the equipment not functioning correctly, or not being operated correctly, or being undersized for your pool. Or it could be a water balance problem.
my pool did get milky but cleared up after 48 hours