Help we bought house last spring past owners opened pool but didn't leave instruction and I can't get them to email me back. They use to do a 'no drain acid wash'. Pool is 30,000 gallons salt water, no winter cover, have vacuumed, shocked and not murky darkish blue color but sides of walls have white scaling on them. I have tried everything. Please someone tell me all the steps to do the 'no drain acid wash' ALL THE STEPS so i can get this pool fixed. Desperate for help.. The pool is the smooth finish like those of the viking pools.