Horrible brown spots

[James68]

any ideas what this could be folks ?
Bergmans Gold Leaf Auto / 9 weeks and 2 days from sprouting /

is this a a Cal-Mag thang ?

[Covertgrower]

Looks like water may have gotten on it.

[James68]

maybe nute/water burn eh?
thanx for replying

[Covertgrower]

Yes. That’s what it looks like. Happy growing!

[James68]

if only the bloody sun woud shine on my greenhouse !