Doheny's Alkalinity Up Swimming Pool Alkalinity Increaser, Raises Total Alkalinity & pH, Fast-Acting Water Balancer, Reduces Corrosion, 25 lb

Everything I have purchased from Doheny's has been top notched, equal or exceeding the name brands. Delivery is super fast and the transactions are quick and easy. If you have questions, there are very helpful people to help you out.

This product works extremely well. The price was ok. Delivery was super quick. Doheny is a very good company.

Always fast service and good products, and a whole lot easier than going to the pool store. Doheny's has been reliable and about the same price, or less, than what I would pay elsewhere.

Helps to maintain chemical balance.

These are much better than others I have tried, they last much longer.

Works exactly the way it should

Works effectively at increasing Alkalinity levels in our pool.

Opening and maintaining pool. Would recommend

Very good quality for the amount

The product works. I had an exceptionally big crowd in the pool and the water was nearing 90 degrees then it poured and we got a couple of inches of rain. I wound up with all major chemicals nearly zeroing out. Bringing up the alkalinity first is important. I had 13 lbs left over from last season and had to get more as that didn't do the trick. Having it delivered in 2 days helped. I wish it could be more concentrated so you didn't need so much. I have a 20 X 40 unground and it wound up taking 40 lbs to get it back to normal.