All this time I have been thinking I am battling with an algae problem when they truth is I have a tear in my liner. The brown colored debris that is constantly showing up in the bottom of my pool is dirt from under the pool liner! My husband has searched the whole pool with goggles and cannot locate the tear. What now? This liner is only 3 years old. I am so upset. Any suggestions how to find the hole? I dont want to replace it just yet.