HTH Pool Care Hardness Up 4 Lb. Calcium Hardness Increaser

Calcium hardness increaser. Low calcium hardness can cause swimming pool water to be corrosive, resulting in damage to pool surfaces, vinyl linings, and equipment. Raising the calcium hardness levels in your water prevents corrosion of your pool surfaces, including metal and plastic. Great for all pool types, including vinyl-lined pools and salt water systems.

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.