It's no worries lifting them. I might do that now just in case.How many true watts is the LED light? 30cms distance for a new seedling maybe(too?) close to the LED?
Looks like a cal mag deficiency. Probably from ph being out. Usually the first deficiency to show in soil when pH is out. Could be lack of cal mag in ya soil but probably more likely to be from pH being out.As you can see, my seedlings have come along okay after a shakey start. They are at 30cm now and I am fairly happy but there is some discolouration on some fan leaves (both plants). I have them in a commercial potting mix. They are under LED grow lights (60 cm above plants) in a small room. There is a fan going all the time. At the moment I give them 20 hours light/4 hours dark. It is unlikely to be overwatering. I'm keeping them on the dry side.
Indoors is so much more fiddly.
No, they are in a commercial potting mix. A good one - not an elcheapo. I'll do a ph test and perhaps a mild foliage fertilize - thrive or something similar/Still in the same crappy soil?
Cheers Porky. I'll do a test and post the results.Looks like a cal mag deficiency. Probably from ph being out. Usually the first deficiency to show in soil when pH is out. Could be lack of cal mag in ya soil but probably more likely to be from pH being out.
Cheers Porky. I'll do a test and post the results.
No, they are in a commercial potting mix. A good one - not an elcheapo. I'll do a ph test and perhaps a mild foliage fertilize - thrive or something similar/
Yeah, I put them into a clean sand but felt a bit sorry for them, so I transplanted them into Richgrow Seaweed Premium Potting Mix. It was the best our little hardware had. I need to experiment and get a good friable, neutral mix before my "paid" seeds arrive. These ones are "bush" seeds that I was given. Outdoors they grow 4/6 metres and get covered in heads. Perhaps they are not an ideal indoor strain.Ahh ok, you mentioned not buying soil in previous comment and then adding some sort of sand?
Now you have bought soil and repotted them? Which brand did you get?
I agree a chemical test would be better Fox. Either way a foliage fertilizer should help I think. My theory is that if it is an root uptake problem then a foliar application gives an alternative route. I am making this up as I go along.Your pH seems good for soil, but not convinced those probe test readings are highly accurate. A soil slurry test would provide a reasonable pH indication. Without any other info, looks like it needs a good feed -after your satisfied pH is correct.
Thanks One Drop. I don't think they're waterlogged. The soil is free draining and the pots sit on a bed of crushed granite. I will lift the pot and make sure the crushed granite isn't waterlogged underneath though. Thanks.Root problems drainage is my fix