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Pargro
Pargro Biggie

Pargro Biggie

Best price now

$142.00at Indoor Sun HydroChecked Nov 7

90% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when.

Visit Indoor Sun Hydro

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Price facts

  • Last seen at $142.00 at Indoor Sun Hydro on Nov 7.
  • Checked at 10 stores.

Our take on the Pargro Biggie

The Pargro Biggie is a 6 x 6 x 6 inch rockwool cube from Grodan's Pargro line, sold loose in cartons of 64. Each block has a single pre-cut plug hole sized for Grodan A-OK or Macro starter plugs and a bottom groove pattern that fits common hydroponic tray and slab systems. It is a plain, uniform growing medium: no nutrients or buffers beyond what rockwool carries, so it suits growers who want a large block for finishing transplants or running drip-fed setups. Compared with smaller starter cubes it holds more water and gives roots more room, but it costs more per plant and dries slower, which matters in cool or low-light rooms.

Best forGrowers transplanting A-OK or Macro plugs into a larger blockDrip or top-feed hydroponic systems with grooved traysRaising larger, longer-veg plants before floweringBuying blocks in bulk for a full run
Pros
  • Large 6-inch cube gives roots substantial volume
  • Pre-cut plug hole fits Grodan A-OK and Macro plugs
  • Bottom grooves seat into common hydroponic systems
  • Uniform density for even moisture across the block
  • Sold loose in a 64-block carton for full crops
Cons
  • Holds a lot of water, so overwatering is easy in cool rooms
  • Bare rockwool needs pre-soaking and pH adjustment before use
  • Loose blocks arrive without wrap, so handling sheds fibers
  • Bulk carton is a big commitment for small grows

Pargro Biggie prices at every store

  • Indoor Sun HydroNew

    In stock

    $142.00Checked Nov 7
    Visit Indoor Sun Hydro
  • BetterGrow HydroNew

    In stock

    $182.74Checked Nov 7
    Visit BetterGrow Hydro
  • Green Thumb DepotNew

    In stock

    $1,175.99Checked Nov 7
    Visit Green Thumb Depot
  • Custom HydroNew

    In stock

    $1,267.35Checked Nov 7
    Visit Custom Hydro
  • Florida Garden SuppliesNew

    In stock

    $1,480.32Checked Nov 7
    Visit Florida Garden Supplies
  • Grow Wiser Garden SupplyNew

    In stock

    $1,484.00Checked Nov 7
    Visit Grow Wiser Garden Supply
  • Little Shop of HydrosNew

    In stock

    $1,653.99Checked Nov 7
    Visit Little Shop of Hydros
  • eBayNew

    In stockSold by wholesalehydroponicssupplies

    $2,070.44Checked Nov 7
    Visit eBay
  • GroIndoorNew

    Out of stock

    $1,026.36Checked Nov 7
    Visit GroIndoor
  • Grow It DepotNew

    Out of stock

    $1,731.99Checked Nov 7
    Visit Grow It Depot

Store links may earn us a commission.

Pargro Biggie price history

Lowest price we've seen: $142.00 on Nov 7 at Indoor Sun Hydro. Tracked across 10 stores since Nov 7.

What reviewers say

Growers who use Pargro blocks describe them as consistent and easy to work with, mainly praising the fit of the plug hole and the even moisture. Complaints center on loose packing and on blocks staying wet too long in cool conditions.

What people mention
  • MoistureMixedGrowers like the even moisture spread but warn the big block stays wet a long time in cool rooms.
  • Plug fitPraisedThe pre-cut hole takes Grodan A-OK and Macro plugs cleanly.
  • PackingCriticisedLoose blocks in the carton shed fibers and arrive without individual wrap.
  • Root growthPraisedRoots fill the 6-inch block evenly through veg.
  • SetupMixedGrooves fit standard systems, but blocks need pre-soaking and pH adjustment first.

From BetterGrow Hydro

  • Pargro Rockwool Block by Grodan, 6 in x 6 in x 6 in (Biggie)
  • Pre-cut single plug hole for transplanting Grodan A-OK or Macro plugs
  • Bottom groove pattern for system compatibility
  • Consistent hydroponic growing medium designed for moisture retention and root development
  • Supports uniform moisture distribution across the block
  • Suitable for a range of hydroponic growing setups
Returns
Considered Special Order and may or may not be returnable; contact the store to confirm the exact return policy before purchasing.
Shipping
Oversized item that may incur additional shipping charges; ships free; too large for UPS, FedEx or USPS and must ship by truck; normally ships in 3-7 business d
In the box
Carton of 64 loose blocks

About the Pargro Biggie

The Pargro Biggie is a 6 in x 6 in x 6 in rockwool block made by Grodan for hydroponic growing. It is a consistent growing medium designed for moisture retention and root development, and it supports uniform moisture distribution across the block.

Each block has a single pre-cut plug hole for transplanting Grodan A-OK or Macro plugs. A groove pattern on the bottom makes the block compatible with a range of hydroponic systems and growing setups.

Material
Rockwool
Dimensions
6 in x 6 in x 6 in
Plug hole
Single pre-cut hole
Plug compatibility
Grodan A-OK or Macro plugs
Base
Bottom groove pattern
In the box
Carton of 64 loose blocks

Questions and answers

Do I need to soak the blocks before planting?
Yes. Bare rockwool should be soaked and pH-adjusted before use, then drained to the right moisture level. Skipping this can throw off your feed from the start.
Which starter plugs fit the hole?
The single pre-cut hole is sized for Grodan A-OK and Macro plugs. Smaller cubes or loose seed will need extra support.
How does the Biggie compare with a smaller starter cube?
It holds more water and gives roots more room, so it suits longer veg and larger plants. Smaller cubes dry faster and are easier to manage for seedlings.
Will it fit my tray or slab system?
The bottom groove pattern is made to seat on common hydroponic trays and slabs. Check your system's groove spacing before ordering a full carton.
How many blocks come in a carton?
A carton holds 64 loose blocks. That covers a full run for most home growers, so split it if you only need a few.
Can I reuse the blocks?
Reuse is possible but risky, since old roots and salts stay in the wool. Most growers treat them as single-run.
Where is the Pargro Biggie cheapest?
At Indoor Sun Hydro, for $142.00, 90% under what the other stores charge, as of our latest check.
Where can I buy the Pargro Biggie?
10 stores we checked sell it, including BetterGrow Hydro, Indoor Sun Hydro, GroIndoor, Green Thumb Depot, Custom Hydro.

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