Rockwool pros??? Any clue whats going on here guys???

  • Thread starter slimjimham
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Bubba kush

Bubba kush

HGV nutrients are designed to be feed at 3.0 EC
from start to finish. You also need to check the EC and PH of your runoff and adjust accordingly.
 
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slimjimham

slimjimham

I mean... that's what the guy recommends but don't you think you can just reduce the numbers as needed to get lower??...

I think im sitting around 2.2ec right now in flower
Around 1.2 ec in veg

🤷‍♂️ 3.0 just seems crazy high and like I'll need to flush 40% runoff to keep from a major salt buildup?

You guys think I'm still starving these girls? Hmmmm I'm not so sure
 
chemistry

chemistry

@chemistry

Why do you say that? Im still hitting em with 418ml every feed which is like a 5% shot size
You have to keep watering rockwool if your going to grow trees in them, or you PH will be all over the place, then you get the crazy leaf patterns like yours, it's quite a small area block wise for such a big plant, bit like the limitations on the solo cup challenge, only so much root space to pick up nuits.
 
JohnnyApp

JohnnyApp

Your leaf symptoms are the result of root damage caused by fungus gnat larve. Mix up a dilute solution of hydrogen peroxide and apply it directly to your cubes (slabs included), after a few minutes (10-15) you'll see the tiny larve working up onto the surface of the cubes/slabs. Reduce watering and/or improve drainage to correct this issue. Best of luck, Rockwool is a pita in the beginning
 
slimjimham

slimjimham

Well it seems the fungus gnats are no more after a couple nematode applications... Gonna but another round to make sure there's not a few left
 
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