NT Labs Koi Care KH Buffer Up pH Stabiliser (1.5kg)

Works fantastic.

Did what it was supposed to do

Happy with purchase and the delivery time

This product works great, it brings my soft water up to the level I need.

Our fish love it

Pleased with my purchase.

Easy to use, but unless you know your pond capacity, go o for a lower dose first and retest after sufficient time for mixing. If you have a second pond pump (IE waterfall) switch it on

I have a 5000 gallon open-air pond with a heavy fish load - to reduce costs I collect rainwater in preference to using mains water to replace evaporation and filter-cleaning losses, which means that the pond tends to acidify, particularly during the spring and early summer. I have used Pond Buffer Up for several seasons - it is not cheap (what is these days?) but after a simple chemical test I can easily calculate exactly how much is needed to bring the KH hardness figure back to its optimum. It takes an hour or two watering the pond with a watering-can (so that the treatment is evenly distributed and doesn't disturb the fish before it hits the filtration) but it's an activity that is well worthwhile.