| Weight | 1 kg |
|---|---|
| Size |
(4")-100, (5")-125, (6")-150, (8")-200, (10")-250 |
ONA Control Duct
£18.00 – £32.00
ONA control duct neutralise odours in your duct permanently, with 5 different ONA block flavours fresh linen, pro, tropic, fruit fusion and polar crystal. With a small hatch to open and close without disconnecting from the duct.
We at Greendaze hydroponics recommend two ONA blocks as a minimum.
**ONA Blocks NOT included**
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