If you are unable to maintain an appropriate pH level in your spa, the most likely cause is that the the alkalinity level is too low. Always correct the the alkalinity balance before you attempt to balance the pH.
eBay
Transform your backyard pond into a thriving ecosystem with our Pond Oxygenator, designed for durability and unmatched efficiency. This energy-efficient aerator enhances oxygen levels, fostering a stable and thriving ecosystem for your fish and plants.
eBay
Quantity: 100pcs(2 bottles). Perfect for swimming pool and spa. Ideal water quality is based on accurate water quality testing. Take it out and lay it flat. After 15 seconds, compare the reading with the color card.
eBay
It contains two pH decreasers, for a gentle decrease in alkalinity. Formulated in deionized water, Microbe-Lift's pH Decrease safely lowers pH levels. It contains two pH decreasers, for a gentle decrease in alkalinity.
eBay
Vitamin-Enriched: Boosts fish immune system, essential for koi food and goldfish food.
eBay
Takazumi Gold Plus 10kg. A well-balanced professional Koi food with a high protein content and an amino acid profile that enables excellent growth. It contains all the necessary nutrition for a healthy Koi life.
eBay
From the manufacturer.
eBay
500g AquaSparkle Stabilised Chlorine Granules. Wizards Hot Tub Starter Kit, is great value providing everything you need so you can relax in your Hot Tub. The Kit includes 500ml AquaSparkle FoamAway.
eBay