Do you let them totally dry out between feedings Dan?
the pots in flower ? no , they get fed 4 times during the light cycle every day for a total of about 2 to 3 minutes . they're still plenty damp by the time the lights come on & they get thier first feed . the very top layer of coco maybe be a little dry , but below that they're plenty wet .
its a no no to let coco dry out at all ! thats when salts cyrstalize & cause problems !