AquaDoc Spa Calcium Hardness Increaser Hot Tub Owners Rely on

Make balancing your water easier & more cost effective with AquaDoc’s calcium hardness increaser granules. Our spa calcium hardness increaser is vital to ensuring proper water hardness levels in your hot tub. AquaDoc’s Calcium Booster gets your hardness up.

Order Processing: After your payment is authorized and verified, we will start processing your order and this process can take from 1 to 2 business days, so please be patient with us. If we are unable to process your order due to inaccurate or incomplete payment or incorrect address information, your order processing may be delayed.

Carrier: UPS/FedEx/USPS. Delivery Timescale: More than 90% of orders arrive in 10 business days after despatch.

FREE RETURNS on all orders!
The following conditions must be met:

1. Items must be returned within 30 days after the purchase date.
2. Items must be unworn, undamaged and in original packaging.