Calcium Hardness Booster

I always order from SpaDepot. Their prices are great and their arrival time is super quick. Delivered right to your door. Love it.
Thank you,
Sheryl N.

Works great no complaints

been getting my stuff from SpaDpot for a long time know and it fast too so far like all that I have gotten. thank you

I love this stuff it works like a charm

Hardest water this side of the Rockies!
Spa Depot has great products, great prices and ships FAST!
Thanks, guys!

With regular testing of my spa water I merely pour in the required amount of product to balance the water chemistry. The Calcium Hardness Booster helps bring the water hardness measure into balance and is very effective. #sweepstakes

Product works as expected. Brings hardness up. Also, Spa Sepot is awesome ingeneral! #sweepstakes

Just follow the directions, works as advertised.

Great product.

yes

Chemistry is chemistry but the people who serve and support are what makes SpaDepot great. Great service, great support and of course great products.

happy with all the products I got.

It did the trick

Perfect fit for our hot tub.

I use this to increase my calcium to 150-200 ppm for my ozone sanitized spa. It works very well and is easy to use. I've been using this product for the past 15 years and will continue using it because it is inexpensive and reliable.

Use as described from back of container and test with pool/spa test kit. You'll see total hardness right where it should be.

These are granulars. Use to the liquid but these worked fine too.

The headline says it all.

Did the job that was expect

Much better price than the local spa store!

Always love using Spa Depot over all others as my hot tub parts supplier. Super fast shipping, prices are usually better than anywhere else, and if I have a question they always have the best advice.

it did what I needed

Using a generic dosage chart to increased hardness from test strip results, this product is accurate. Must use every time I refill hot tub to bring hardness up to correct levels.

The price is very reasonable and shipping is fast. No quality issue.

The bottle was a little smaller than I expected but cost and shipping time was all great

I just bought test strips, and assorted spa chemicals from these guys. FAST and cheaper than my dealer!

The bottles were NOT taped shut, the 1 came off and some of the calcium spilled out into the box, thankfully wasn't a big loss..next time tape the bottles lids on securely!

This did what I needed it to do and was the best price.

Another excellent product from the SpaDepot.

Required product for keeping the chemicals in my spa. balanced.

Works as expected.

Lightning fast shipment. Quality, affordable products.

Quality product.

In my spa