I have an above ground pool A sterns South sea... It is full... On one corner the lvel is out about 2.5 inch... Is this dangerous... It is 6" by 4" approx... What should I do to fix it... It has decking all round it.

What shape is this pool? Any chance for a picture? Since this pool has a 1.2 M side I think maybe you did not mean it is 6" x 4"