What Goes Into These Open Top Grow Bags
The fill is a blend rather than straight fibre. Coir chips sit alongside natural coir, and the mix is what sets the balance between what the bag holds and what it drains. Riococo wash the raw material five times before it is blended. That washing is the whole point, because unwashed coir carries sodium and potassium that will fight your feed programme from day one. Fine dust is screened out for the same reason the starter blocks are: dust closes the structure and drowns roots. Published pH sits between 5.5 and 6.5 with conductivity under 1.0 mS/cm. Organic matter runs 95 to 98 percent by weight. The bags arrive compressed and open out when wetted. Case counts differ by size, so check the quantity against the price before comparing them.
Choosing Between Coco Coir Grow Bags by Size
Pot size decides root volume and root volume decides how often you water. A one gallon bag under a strong light dries in a day, which suits a fast turnaround and punishes a missed watering. Three gallons buys margin but slows the drying cycle, and in coco the drying cycle is how you steer the plant. Most rooms on a daily feed settle somewhere in the middle. The case economics push the other way, and that is worth understanding before ordering. Small bags come many to a case and large bags come few. The price per case tells you almost nothing until you divide it by the bag count. The honest limit is what these bags start with. Conductivity under 1.0 means close to inert, so every nutrient the plant sees comes from you. Buffer them before planting if your water is hard.
Key Features
- Fill: Coir chip and natural coir blend rather than fibre alone
- Washing: Raw material washed five times before blending
- Dust: Fine particles screened out to keep the structure open
- pH: Published by Riococo as 5.5 to 6.5
- Conductivity: Under 1.0 mS/cm, so close to inert at the start
- Organic matter: 95 to 98 percent by weight
- Format: Compressed on arrival, opening out once wetted
- Sizes stocked: One, two and three gallon
- Packing: By the case, with a different bag count for each size
Technical Specifications
| Specification | Value |
|---|---|
| Range | RP20010, RP20020, RP20030 |
| Material | Coir chips and natural coir mix |
| Washing | Five times washed |
| Electrical conductivity | Under 1.0 mS/cm |
| pH | 5.5 to 6.5 |
| Organic matter | 95 to 98 percent by weight |
| 1 gallon, case | 44 bags |
| 2 gallon, case | 18 bags |
| 3 gallon, case | 9 bags |
| 1 gallon, wet size | 15 x 15 x 15 cm (6 x 6 x 6 in) |
| 2 gallon, wet size | 22 x 18 x 18 cm |
| 3 gallon, wet size | 25 x 20 x 23 cm |
| 1 gallon, dry size | 21 x 17.5 x 6 cm |
| 3 gallon, dry size | 24 x 19 x 6.5 cm |
| Weight, 1 and 2 gallon | 0.8 kg (1.76 lb) |
| Weight, 3 gallon | 1.28 kg (2.82 lb) |