Some seedling help

I came home from work and found some grey spots pop up on some of my seeds. I’m not sure what it is. I feed them daily with ph water at 6.4 with some light nutes. There grown in coco perlite. The lights have been on for 24 hours for about two weeks now and the humidity is around 65%. Any thoughts would be appreciated

My thought was new growth comes from the top (which is healthy) and since I just started dialing in the right feed it might just be theirs old dead leaves from the beginning of the grow just dying?

Are those rapid rooters? Have roots started coming out of the holes on the bottom of the pots?

6.4 is high for coco. I run at 6.0 and others run lower.

Mikeyd822 said:

I came home from work and found some grey spots pop up on some of my seeds. I’m not sure what it is. I feed them daily with ph water at 6.4 with some light nutes. There grown in coco perlite. The lights have been on for 24 hours for about two weeks now and the humidity is around 65%. Any thoughts would be appreciated

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Definitely some kind of deficiency — it would become visible on the lower leaves first as the plant cannibalizes them for nutrients. I don’t go down that coco route, seems like everyone that does runs into problems. There’s a chart floating around here that shows the leaf symptoms of various deficiencies. From my recollection yours might fit manganese but I’d try to find the chart rather than rely on my hazy recollection.

start running at 5.8 your way to high

you don't have to be a nervous nelly watering youngins in coco, the more wet cycles in coco the more available oxygen, you should soak through daily , small container and warm temps might need 2x

do you feed calmag?

I do feed cal mag and I water to run off at least once maybe twice a day. Rapid rooters are still in there but it’s in a 1 gallon of coco

what ppm?

Around 220. It’s the gh trio and calmag

220 + calmag?

Should I snip those yellow leaves completely off?

no its not dead

220 total about 2 ml calmag and a half ml per gallon of the other 3

try feeding closer to the 5.8, 6 range for a few days, is it drying out between feeds?

No it’s not drying out

I thought the higher the PH around 6.5 the more conductive the calmag would be

5.2 - 6.8 but i think you should drift abit

Word up. Thanks man. I was thinking it might be a phosphorus deficiency

They were yellow for a while and then when I got home today they all had that grey spots on them