WATER LEVELSOOL 

• Maintain your pool water level halfway up the skimmer box opening.
• Normally, a pool should lose no more than 1/4 inch of water per day. If  you notice a greater loss, suspect a leak.
• Loose tiles or cracks in the pool deck may be an indication of a leaking pool.
• Cracks and gaps in the bond beam may be an indication that your pool is leaking.
• If you notice water-saturated soils in the area around the pool, pool  pumps or plumbing, your pool may be leaking.
• If you see bubbles in the return water when the pool's pump is running, it's likely there's a leak in the suction side of the filtration system.