Universal Alkalinity Increaser 1Kg

Had a problem getting alkalinity level right in my hot tub. Used Ph plus but it was a slow process. Used this for the first time and boom alkalinity spot on. Will definitely purchase again. Arrived next day as promised.

It does what it says on the side of the tin,But my advice would be to read the instructions and add to the water in increments

the water in my hot tub had gone out of balance and the alkalinity was way off. put this in and within 2 days was back to how it should be. does what it says on the tin.

Tub was half empty! I didn't weigh it, as I needed to use it straight away but that's either a waste of single-use plastic, or it was under weight! Picture shows the level after 4 scoops have been used

Big scoop is much better than using a tea spoon to measure out. Easy to use with big open tub makes it easy to dispense the chemical.

Good delivery time. I was adding pH+ everyother day to my spa, alkaline low ISH! I added 2 scoops of this and my pH and alk have been bang on since! That was weeks ago! Great product!

I use this for my hot tub and works great and good value for money

Seems to do what it says on the tin. Happy that it increases the alkalinity just fine. Only had to use it once so far.