I don't think it gives a accurate reading for alkalinity or ph. I check water with 2 other strips and they're close to each other where as the Clearwater isn't. I only use it for Copper ion.

So easy and no smell. Can't believe how little you have to use to keep the tub clean. I'm definitely going to keep using this product.

Always fast shipping. Excellent product. Plan to buy over and over again!

I was having so much trouble with a dirty spa odor. I think it was from the chlorine. I switched to this and so far it is working great. No odor and looks clean

Cleanwater Blue works great. Keeps my spa clear and it's so easy to use.

I love these test strips to test my hot tub water

After much research we decided on the Clear Blue System. We use the test strips to check the levels. The colors on the test strip do compare very well to those on the bottle so we know that we can feel good about any changes that we need to make to the chemicals.

Strips are easy to use. Only necessary to test every 2 weeks to balance chemicals.

Very helpful staff.

The products are good, but the customer service is fantastic.