If your pool test shows total alkalinity above 175 ppm, the water becomes resistant to pH corrections and chlorine loses effectiveness. Piscimar Baja TA pool alkalinity reducer is a crystalline acid granulate that lowers total alkalinity without altering the pH of the water, dosed gradually in line with the tables included in multiparameter test kits. Suitable for any type of pool or spa – tile, polyester, liner or reinforced membrane – and compatible with salt electrolysis systems.
What is Piscimar Baja TA and how does it work
Piscimar Baja TA is a total alkalinity reducer in granulated form, with a white crystalline solid appearance and no odour. Its action is selective: when dosed in split portions, it lowers the total alkalinity of the water without dragging the pH down to acidic levels – an important distinction from other acidifiers that act simultaneously on both parameters. The product dissolves easily in water (solubility of 1050 g/L at 25 ºC) and leaves no visible residue in the pool.
Ideal for: pool owners with total alkalinity above 175 ppm who need to correct the parameter without destabilising an already-adjusted pH. Designed for those who carry out regular analyses with a multiparameter test kit and want a precise, controlled correction.
What type of pool is Baja TA suitable for
Baja TA is suitable for both in-ground and above-ground pools, with finishes in gresite, tile, polyester or liner. In pools with liner or polyester, the product must be pre-dissolved in a bucket of water before being added to the pool, to avoid direct contact of the granulate with the surface. The product is equally suitable for pools with a salt electrolysis system, and does not interfere with the electrolytic cell.
Treatment with Baja TA should begin when total alkalinity exceeds 175 ppm. The ideal target value is 100 ppm according to the manufacturer Piscimar’s technical data sheet, with a recommended operational range of 120 to 150 ppm. For pools that also require water flocculation, Piscimar Bonflok is the recommended complement for clarifying suspended particles after alkalinity correction.
How to apply Baja TA: dosage and instructions for use
The manufacturer’s reference dosage is 25 g per m³ of water for every 10 ppm reduction in TAC. Calculate the total dose based on the pool volume and the desired reduction, then divide it into three equal parts.
Step-by-step application method:
- Test the alkalinity with the multiparameter test kit and calculate how many ppm you want to reduce.
- Calculate the total dose: (ppm to reduce ÷ 10) × 25 g × volume in m³.
- Divide the total dose into 3 parts. Add the first part with the filter running, distributing the product throughout the pool.
- Wait 6 to 8 hours and add the second part. Repeat the interval for the third part.
- Keep the filter running for at least 1 hour after each addition.
- In pools with liner or polyester, dissolve each part in a bucket of water before adding.
Splitting the dose into three portions spaced 6 to 8 hours apart is the mechanism that allows alkalinity to be lowered without affecting the pH – adding the full dose in one go would produce a more abrupt acidifying effect and could destabilise the pH. The 8 kg pack is sufficient for successive treatments in an average-sized pool. Do not add Baja TA at the same time as disinfection treatment – apply them at separate times.
Technical features of Baja TA PM-642
- Granulated format, easy to dose – white crystalline solid, odourless, no airborne dust.
- High solubility for rapid dissolution – 1050 g/L at 25 ºC, dissolves without leaving residue.
- Strongly acidic pH in solution – pH 1.0-1.4 (10% solution), responsible for the alkalinity-reducing action.
- High thermal stability – melting point 179 ºC; decomposition temperature 460 ºC; safe to store at ambient temperatures.
- Density 2.44 (20 ºC) – dense granulate that settles quickly when pre-dissolved.
- 8 kg pack – format suited to spot corrections and maintenance treatments.
Technical specifications of Piscimar Baja TA PM-642
| TECHNICAL DATA | |
|---|---|
| IDENTIFICATION | |
| Reference | PM-642 |
| Format | Crystalline solid granulate |
| Appearance | White crystalline solid, odourless |
| PHYSICO-CHEMICAL PROPERTIES | |
| pH (10% solution) | 1.0 – 1.4 |
| Density (20 ºC) | 2.44 |
| Solubility in water (25 ºC) | 1050 g/L |
| Melting point | 179 ºC |
| Decomposition temperature | 460 ºC |
| DOSAGE AND APPLICATION | |
| Reference dosage | 25 g/m³ for every 10 ppm of TAC to reduce |
| Application method | Divide total dose into 3 parts Add each part at intervals of 6 to 8 hours Filter running for at least 1 hour after each addition |
| Pre-dissolution (liner / polyester) | Required – dissolve in a bucket of water before adding |
| Ideal alkalinity | 100 ppm (operational range: 120 – 150 ppm) |
| Treatment threshold | Above 175 ppm |
| Compatibility | All finishes (gresite, tile, polyester, liner) Salt electrolysis systems |
| PACKAGING | |
| Net weight | 8 kg |
Frequently asked questions
How long does Baja TA take to affect alkalinity?
The effect is progressive across the three split applications. Each dose acts over the following 6 to 8 hours. After the third dose and at least 1 hour of filtration, test the alkalinity again. The final result is visible within 18 to 24 hours of the first application, depending on the pool volume and the desired reduction.
Do I need to dissolve Baja TA before adding it to a liner pool?
Yes. In pools with a liner or polyester finish, the granulate must be pre-dissolved in a bucket of water before being poured into the pool. This step prevents direct contact of the concentrated acid product with the surface and is recommended by the manufacturer for these types of finish.
How much Baja TA do I need for a 50 m³ pool?
To reduce alkalinity by 10 ppm in a 50 m³ pool, you need 25 g × 50 = 1,250 g (1.25 kg). For a 20 ppm reduction, the dose rises to 2.5 kg. Always divide the calculated dose into three equal parts and apply at intervals of 6 to 8 hours.
Does Baja TA work in pools with salt electrolysis?
Yes. Piscimar Baja TA alkalinity reducer is suitable for pools with a salt electrolysis system. The product does not interfere with the electrolytic cell or compromise the salt disinfection process.
What is the ideal alkalinity level to maintain in a pool?
According to the Piscimar manufacturer’s technical data sheet, the ideal alkalinity value is 100 ppm, with a recommended operational range of 120 to 150 ppm. Above 175 ppm, alkalinity is considered high and treatment with Baja TA should begin. Below 100 ppm, alkalinity is considered low and requires an alkalinity increaser product.
Piscimar Baja TA PM-642 is the reference granulated solution for correcting high alkalinity in residential pools and spas, with a precise dosage of 25 g/m³ for every 10 ppm reduction and confirmed compatibility with all common finishes and salt electrolysis systems.
| Weight | 3 kg |
|---|
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