Colombo GH Plus - Water Hardness Test
Very easy to use product. And to dose I highly recommend it to everyone
Very good product to associate with kh + for a perfect balance of water. In a week the water is clear again.
Used with KH +, the cocktail is perfect to remineralize a pool filled with rainwater or in areas where the water is almost free of minerals (Auvergne).
Product purchased in replacement of the one used usually fulfilled its mission perfectly
very good product that is effective quickly, used with balantex to keep the good hardness (gh and kh), which stabilizes your ph. small negative point one of the two buckets was slightly damaged.
product colombo GH + format suitable for large pond with easy operation
Easy to install, this non-return valve fills it perfectly.