Seems like a little bit of a lonely thread. Mind If I hop aboard?
I was thinking that 6.8 was in the zone for soil and wouldn't expect problems. Guess you have nothing to lose by lowering it a little.
I've been suspecting mag deficiency in mine as I've been keeping my PH down around the 5.5 - 5.8 range so I'm just going to let my drift up a little for a couple of days.
Lol welcome just coming into the fun part of flowering just in time
Yeah give it a bit more cal mag if it doesn't help I'll prob just do a flush the run of was still around 700/900 ppm so may try to get that lower in the next few days
I have only been using the GH trio nutes but it has always been at the back of my mind to get some calmag. I'll keep an eye on her over the next few days and then decide whether it is necessary. She's sitting at about 6.2 at the moment and I'll have another good look at her when she wakes up later, but I'll keep her at about the level.
Good luck with your flushing and hope that resolves things!
Wee update of the non flushed NL that was given me issues .. kinda got worse lol
Looking at the rust on it now gonna flush it today and try to drop the ph to 6.5 as it seems to be a mananese (mn) or (k) but looking more like mn I would say