Ona Block Category_Growing Systems/Flood & Drain Systems Increases the ability to absorb

Increases the ability to absorb available nutrients

Measure with a reliable pH meter until the desired level is reached (typically 5

Scientifically based

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and micronutrients during all the plant's development stages

Ona Block Category_Growing Systems/Flood & Drain Systems Increases the ability to absorbONA BLOCK Remove foul odours naturally use ONA Blocks. They dont just mask odours they neutralise odours using an essential oils based formula that seeks and destroys organic and non organic odours, replacing it with your choice of scent. Simply remove the lid and let the active ONA ingredients evaporate and neutralise any odours they come into contact with, permanently and efficiently. Its as easy as that. KEY VALUES: Choice of Scents: Pro, Fresh