Mine draining biles...since yesterday??

anyone knows anything bout that.
we re not in darkness, new alt doesnt have any problems, we never noticed draining before yesterday, we just noticed it doesnt drain close to ladder, but it does further away.....
thx for replies
we re not in darkness, new alt doesnt have any problems, we never noticed draining before yesterday, we just noticed it doesnt drain close to ladder, but it does further away.....
thx for replies