The general rule of thumb is NO!
My buddy has a tray of 50 clones that didn't root. The problem was he used straight RO water with no nutes in it so the ppm was around 20.
Nothing rooted in the cubes, and he wants to re-use them. I told him to throw them away just to be on the safe size. He wants to re use the cubes. I would error on the side of caution and chuck them.
Thoughts?
My buddy has a tray of 50 clones that didn't root. The problem was he used straight RO water with no nutes in it so the ppm was around 20.
Nothing rooted in the cubes, and he wants to re-use them. I told him to throw them away just to be on the safe size. He wants to re use the cubes. I would error on the side of caution and chuck them.
Thoughts?