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Ona Blocks

Product Code: HYV-0012
ONA Block is a high-quality, long-lasting and reliable odour control. ONA is renowned for producing one of the best odour control products on the market. The odour-neutralising powers of ONA products are known to rank among the best in the hydroponic industry.

Ona Block 170g

This product comes in a neat, compact form, without sacrificing any of ONA's internationally recognised odour-busting capability.

ONA Blocks will comfortably rid surroundings of unwanted smells without leaving behind overpowering fragrances –unlike many other products on the market, which only work to mask smells without eliminating the root cause of the problem.


Ona Blocks are long-lasting. if used correctly, the user will get several weeks of continued use out of each block.

Concentrated Formula

The ONA Block contains a solid, concentrated mass of essential oil-based formula derived from natural, plant-based ingredients. This makes it a sensible choice for the more environmentally conscious out there – a great alternative to the sea of chemically-based options on the market.

Easy to Use

Ona Blocks are extremely easy to use, simply unscrew the top to start experiencing the benefits


  • Reliable odour control.
  • Easy to use.
  • Long-lasting.
  • Concentrated formula.

Product Data

  • Brand: Ona