Check you water level. It sounds like you have too much water in your pool. When your pump is running, it is "sucking" water through the skimmer, keeping the water level pulled down inside of the skimmer. When you turn the pump off, the water level pushes back up, causing the skimmer lid to come off.
BETTER ANSWER::
Totally opposite of the above answer. If the water level is at or below the throat of the skimmer then yes the pool water can vortex in that skimmer causing air to be sucked into the pump. The skimmer basket keeps popping up because of the entrapped air. It has nowhere to go except back to the pool in the direction of least resistance when the pump shuts off. Bring and keep the water at mid level or slightly higher. Add fill water when the water gets to within about one inch of the bottom of the skimmer. Another reason would be that you have an actual suction leak. Suctions leaks are found in the Plumbing and/or pump back to the pool on the suction side of the pump. Sometimes the pump seal can leak and cause this. Check under the base of the pump at a place between the pump basket or pot and the motor. If damp, that may be the cause of the air. The air gets into the filter tank then backs up to the pool at the skimmer.
K
pump may have been starving for water, due to low water level, causing air build-up in filter tank.
If you mean a weir, the answer is no. The weir is meant to keep the bugs, leaves, etc from going back out onto the surface of the pool especially when the system shuts down. By skimmer plate, just what do you mean by the term? Ken
Add thru the skimmer box
Google Aladdin pool equipment ( Lilly Pad skimmer)
You only use the skimmer/s
Adding algae control to the pool skimmer helps to disperse the chemical and coats the filter media.
Attempting to obtain step by step diagrams connecting an above ground pool to a sand filter.
The pool's manufacturer. They are not at all standardized across brands, so you need to know what brand your skimmer or pool is, and it helps if you can locate a pool store and bring the old skimmer to them - they may be able to order one, even if they don't have that brand in stock.
Yes possibly In reality, the skimmer will not cause a leak. What causes leaks are people who do not connect or glue the fittings to the skimmer properly. Or ground movement like earthquakes. k
Get a better pool skimmer normal pool skimmers usually don't do a very good job of cleaning rubbish from the surface of a pool so try a floating pool skimmer have a look on www,dragonfly.biz
The water in the pool is too low,
$600.00
A pool skimmer is generally built into the side of or around the top of a swimming pool in order to skim debris from the surface of the water. A pool filter is built into the plumbing in order to filter fine debris from the water itself.