md.apothecary
Art is Resistance!
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- Oct 9, 2007
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For clarification.... this is what the page says, so those reading/watching can understand what's going on.
BTW, The very top of the page is really bolded. I bolded it here not to prove my point, but to illustrate the page exactly. The colors were added by me to show reference. (hxxp://www.4hydroponics.com/grow_room/rockwool.asp)
Delta Gro-Blocks are cubes of stonewool (rockwool) that have a grooved base which promotes drainage to avoid root rot. Grodan stonewool is pH neutral, making it easy to maintain the ideal gardening pH value of 5.5 - 6.5. Each block is wrapped in white plastic on all sides for individual use.
They can be used for direct planting or "potting up" of plants started with Grodan Macroplugs or A-OK plugs. When your seedlings have a couple of small leaves and the roots emerge from your Macroplugs or A-OK plugs, soak the the Gro-Block in pH5.5 water overnight and insert the starter plugs in the holes the next day. Hold off watering for 1 to 2 days to prompt the roots to expand quickly into the Delta Gro-Block.
Once your plants have outgrown the Gro-Blocks, simply expand the growing medium by blocking onto a Grodan Slab. No pots, no soil, no mess!
Not using hydroponics? Stonewool can be planted directly into soil, indoors or out.
Delta Gro-Blocks provide more evenly distributed pores and a robust design, giving your plants the optimum zone for root growth throughout the entire block. Stonewool is recognized the world over as the ideal hydroponics growing substrate.
"soak the the Gro-Block in pH5.5 water overnight" ... why?
"to prompt the roots to expand quickly into the Delta Gro-Block."
Ahh, I was waiting the back track defensive manuver...
It's LIME FREE because certain companies, pre-soak the cubes. How can a rockwool cube truely be pH neutral?? You know this one... remove the lime! How do you remove the lime??? Pre-soaking!
BTW, The very top of the page is really bolded. I bolded it here not to prove my point, but to illustrate the page exactly. The colors were added by me to show reference. (hxxp://www.4hydroponics.com/grow_room/rockwool.asp)
Delta Gro-Blocks are cubes of stonewool (rockwool) that have a grooved base which promotes drainage to avoid root rot. Grodan stonewool is pH neutral, making it easy to maintain the ideal gardening pH value of 5.5 - 6.5. Each block is wrapped in white plastic on all sides for individual use.
They can be used for direct planting or "potting up" of plants started with Grodan Macroplugs or A-OK plugs. When your seedlings have a couple of small leaves and the roots emerge from your Macroplugs or A-OK plugs, soak the the Gro-Block in pH5.5 water overnight and insert the starter plugs in the holes the next day. Hold off watering for 1 to 2 days to prompt the roots to expand quickly into the Delta Gro-Block.
Once your plants have outgrown the Gro-Blocks, simply expand the growing medium by blocking onto a Grodan Slab. No pots, no soil, no mess!
Not using hydroponics? Stonewool can be planted directly into soil, indoors or out.
Delta Gro-Blocks provide more evenly distributed pores and a robust design, giving your plants the optimum zone for root growth throughout the entire block. Stonewool is recognized the world over as the ideal hydroponics growing substrate.
"soak the the Gro-Block in pH5.5 water overnight" ... why?
"to prompt the roots to expand quickly into the Delta Gro-Block."
massproducer said:Here you sure said that rockwool has no lime?
Ahh, I was waiting the back track defensive manuver...
It's LIME FREE because certain companies, pre-soak the cubes. How can a rockwool cube truely be pH neutral?? You know this one... remove the lime! How do you remove the lime??? Pre-soaking!