StabHi pH Lift Powder

StabHi increases the pH and combats acid buildup in fish aquaria, tanks and ponds. 

The biological processes in aquaria and fish ponds drive the pH down while depleting the supply of calcium ions in the water.

StabHi is used to increase the pH, alkalinity and hardness of aquaria and fish ponds ALL at the same time. All aquatic life needs the correct levels for pH and alkalinity to function properly. Equally it is just as important is to maintain the hardness by adding calcium and magnesium ions. These, inter alia, are required in the cell structure of the bacteria populating the biological filter and the bone structure of your growing fish. Many a bio filter are functioning below par because of this shortcoming resulting in a stressful life for the fish.

StabHi does all that in very much the same way as the popular Bicarb do. But sodium bicarbonate is for swimming pools not fishponds. Sure it increases the pH, but not calcium hardness. Your swimming pool gets its calcium from the "chlorine" you so liberally add.  You NEVER put chlorine in your koi pond.

Since fish keepers prefer to 'stabilise' the pH of their tank at a level of their choosing, it is necessary for keep enough StabHi available to “satisfy” the “acid creep”. This can only be achieved by trial and error because of the many factors involved.

Factors that will affect its dosage:

  • Flow rate: More effective mixing.
  • Total surface area available
  • The daily food fed to the fish.
  • Protein level in the diet: Protein in the diet results in ammonia in the blood and subsequently in the pond water. Ammonia is oxidised in the nitrification process to nitrites and further into nitrates with the liberation of three hydrogen ions for each ammonia resulting in a higher hydrogen ion concentration (lower pH)
  • Carbon dioxide, CO2 concentration. The CO2 concentration of the water effects the pH and solubility of carbonates due to the carbonate/bicarbonate equilibrium.
  • Water temperature: The higher temperature will the solubility and reaction. The temperature effects the CO2 solubility and subsequently the pH
  • Constituents of the natural waters and the prevailing water parameters
  • Hardness will increase to the point where it has a negative impact on the water. Keep hardness below 120 mg/l as CaCO3 with flushing/backwashing.
  • Sunlight and algae will affect the pH via the diurnal variations in O2/CO2 concentrations due to transpiration/respiration.
  • Level of leaching of the pond. Poorly constructed and/or sealed concrete ponds will leach out in the absence of suitable alkalinity sources (eg StabHi, oyster shells, “bicarb” etc.

 It can be seen that the interaction of the many factors make it very difficult to predict the precise dosage.

We therefore suggest starting with 4 or 5x 4kg bags per 10-20 kl pond. If the pH increases beyond 7.2 reduce the volume of StabHi, but if it drops, increase the volume. Remember this will take time to dissolve.

You can always remedy very acidic (low pH) water quickly by dosing it with StabHi Up Powder at a rate of about 2.5 Kg per 5000 litre pond.

Keep the hardness above 80mg/l and preferably below 250mg/l of CaCO3, this will also keep the ionic content in check. The conductance of the water is a measure of the total ionic species and therefore a measure of the TDS (total dissolved solids) and visa versa. So, do not be confused.

 Increase the pH of a live ecosystem slowly over several days if the change will be more than 1 pH unit. (I personally do not believe for a koi pond it makes any different whether adjusting slow or fast. Anecdotal stories no real evidence. Get to your target value as quickly as possible and the fish will thrive. Of cause taking due consideration with diluting process.)

The pH scale is logarithmic, so exponentially less will be required as we approach the target value.

(Please keep record about what you are doing, in such a way you understand what you are doing better. We appreciate your feedback.)

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