From close ups of pic's it looks like the rockwool is too wet. Pick up the cubes and just kind of sling the excess water out of it. When we used rockwool keeping it just right is hard. A shallow container just about as tall as the rockwool cubes. Just about an 1/8 inch of water in the bottom and the cubes will wick it up but remember too wet and pythium. When we did it this way we used R/O water at 7.0 ph and a near 100 percent rate. PH is really for nutrient uptake. I am unable to find at what PH does a plant uptake the most water ?

I know I know it goes against all you read but it works for us. Strange.
The ph way works too.

We had very little success with cloners untill just a couple months ago. We added 1/4 strength nutes and some ST. Now roots in 7 to 10 days and ready to go except for one strain, northern lights. It likes the rockwool rapid rooter or rootriots method

If you start beans in the rockwool you must keep it alot dryer or pythium will kill quick.

You must find what works for you.
LOC NAR on probation Reviewed by LOC NAR on probation on . What's wrong with my clones??? I've recently cloned the sour diesel and the bagseed, and they aren;t lookin so hot. They seem like they are havin PH issues, but i'm watering the rockwool with water PH'd to 5.5. They have curling tips which are gettin all dry, and seem to be awfully yellow. I hope one of you growin gurus can help me out. here's some pics. Thx in advance dudes!!!:jointsmile: Rating: 5