How do Balance Tanks work?
A balance tank is pivotal in maintaining a constant water level for spa and deck level pools. The balance tank sits between the filtration system and the pool tank itself. It works as a reservoir (or holding tank) storing displaced water by bathers entering the pool. The balance tank then releases water back into the pool when bathers leave the pool to maintain a constant water level. As such the balance tank is key to ensuring a well-balanced water level for safe bathing for all users.
The balance tank is located before the swimming pools filter system and has a constant flow of water, they typically suffer from a build-up of large amounts of debris and contaminants. The balance tank prevents any of the large items of debris making its way back into the pool. Debris can include particles of swimming floats and pull buoys, goggle lens covers, rubbish, hair bands, plasters and other particulates from the swimming pool.
Bathers often ignore requests to shower before entering the water, they will often enter the water body fats, moisturisers, false tans, perfumes, salts, etc on their person. These contaminants attach to water particles causing biofilms on the water’s surface. As the water enters the balance tank this film creates a membrane on the balance tank walls and ceilings. Bacteria, Legionnaires, Pseudomonas & E-Coli then have a warm, humid environment and a platform on which to grow.
When should Balance Tanks be cleaned?
The PWTAG (Pool Water Treatment Advisory Group) recommend Balance Tanks Inspections and Cleaning be carried out on an annual basis. Balance Tank Cleaning should be carried out at the same time to remove any debris and the tank walls should be brushed and flushed down with 10mg/l chlorinated water. This water can then be returned to the circulation system via the swimming pools filtration system.
Balance Tank Maintenance Progams
Balance Tank Cleaning must form part of your swimming pool maintenance program. This can be an overlooked feature of the swimming pools filtration system, however, they play a significant role.