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I use ma to lower my TA and get pH in check and have done so relatively well in the past. But I just purged and refilled the spa, lowered TA and have a problem. I thought something was wrong with my test kit because TA was getting really low but pH just was not cooperating. According to a store...

I'm in the process of purging and restarting the hot tub and I have a new product I wanted to try - Aqua Clarity. However while reading about the many threads and comments posted in this very educated and informative community I did come across a concern. Aqua Clarity contains BAC and it's...

Do you guys buy name brand filter cartridges or are there cheaper alternatives that perhaps aren't as good but work well enough?

Before asking I have searched but couldn't find the answer. How do I add salt? I need to add about 4lbs.

I have CH of 220 in my spa and based on my reading that number is not an issue. I was trying to figure out and search for low calcium levels and how that would affect things. I couldn't find anything, but curious what would say less than 100, or even 0 CH water be like. Would that water feel...

My spa is outdoor, but I live in an area where the sun isn't an issue for me. My spa isn't used during daylight hours anyway. Should I still bother caring about CYA?

Not sure how to describe this. My water is clear, doesn't smell, chlorine I just tested CC 0.5, and free is 5.5. The water felt sticky which I've searched for on tfp and found that it could be TA and pH related. What has me concerned though are whitish bubbles. There's no foam, but the odd...

I live in a cold, snowy area during winter. My hot tub has a bog standard hard cover and nothing else. We plan on using the hot tub all winter. Is there a winter cover or another type of cover that should be on it? I would be concerned with wind, and losing heat with just the normal cover.