4 pH in Passive Hydroponics

Passive hydroponics refers to growing in pots full of a medium such as Perlite or Canna Coco Peat or to hand watering RockWool Slabs...

Normally for this type of cultivation we would recommend the grower to make up a large container of nutrient at a time. A 200 Litre plastic drum is an ideal container. Omce this is made up to the correct strength ( conductivity), the pH can be checked and adjusted to the ideal leved of 6. A careful note should be made of the exact amount of pH UP or DOWN that is added at a time. In the futue this amount can be added as routine when making up solutions and pH should remain pritty constant from batch to bach although spot checks ate recomminded from time to time. A good Kit, such as the one we supply can be used for this because although the pH measurement takes longer than with a meter, it only needs doing occasionally in passive systems. The nutrient solution in the drum should remain quite pH stable and can be applied to the plants as needed.