Mold growing in S/H.

[Ray]

1) At 0.8 ml/L of that formula, you are applying at a concentration of about 65-70 ppm N, which is fine. I might go stronger, but it's not critical.

If the "white hairs" are in a web form, it's definitely a mold. If they stand up more like whiskers, it's probably manufacturing residues coming from the LECA.

[Bruno Ville]

What would you reccomend to achieve 100-150 ppm??

Also, how do I know if they need some misting?

What about the Aliflor LECA, where is it manufactured?

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[Ray]

Divide 13 by the %N on the label. The result is ml/L for 125 ppm N.

The idea for misting the top of the LECA is to keep it moist and hospitable to new roots, so the answer is "whenever it is dry".

Aliflor is South American in origin, but I don't know specifically where.

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[Bruno Ville]

After almost a month my plants seem to be OK.

Lots of new root growing and the medium seems to be wicking water quite decently.

The dry line lies just an inch below the surface.