can't locate a pool leak

[Dr Headley]

Could you tell me what is the best way to find a leak?Water is below the light and I got a plug in the drain.I'm still losing water,I checked all around the seams no tears I'm lost for answers I've called all the pool companies and get no where can you help?

[Guest]

Is there any other fixtures below light? like return line? if it is,plug it off & see if still goes down.

[dynamictiger]

Could you tell us what the pool is made of and when you say teh water level keeps going down is it as fast or faster than before?