Time to clean my hot tub. I am going to order some Ahh Some but was wondering about adding vinegar for a few days while I wait for it. Is this a good idea or should I just use the Ahh Some? I have seen different opinions on vinegar, could it damage anything? I have a Sundance ~400 gallon Altimar. Also, how many treatments of Ahh Some are usually needed? I have always kept the water clean but after seeing a few videos, I am sure I will be unimpressed on what I will find. It is 5 yrs old and only has had water changes, never cleaned with a product like Ahh Some. Any advice?