Some pools may also have calcium nodules built up on their plaster (that resemble bird droppings) these can normally be sanded off while the pool is still drained.
Pool Tec can handle such procedures.
Acid is a dangerous substance. Pool company personnel are specially trained in its application and wear protective clothing and breathing apparatus during the acid wash. It is not recommended to do an acid wash on your own.
For questions or to schedule a service call, email:
firstname.lastname@example.org or call 520-302-4939