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hungry plants or mag def

my m8 has 5 BF blue cheese on the grow,there just coming up to 4 week since they were put into germ,he had a few issuses with low RH but that is well been sorted out,he's been feeding them a very weak mix of DUTCH PRO A & B to 6lts of 6.6 ph water he's been giving them 0.8ml for there 1st feed an 1ml for there 2nd feed now under the light it looks like they have early signs of mag def an some of the tips r drying up a little,to me i think there starving hungry i think he needs to be putting at least a 1ml per liter an see if things start to look better,but when he takes them from under the light they look normal green but if u look very closely u can see like very small yellow dots on a couple of the leafs an what looks like to me a early mag def comeing on,but like i said are they hungry,they were only repotted 5 days ago an the roots are already growing out the drain holes,what do u think he should do'up the feed to 1ml a ltr or do u think its time he got some cal/mag just incase it sets in.in genral the plants them selves are doing great there in a perfect enviroment with top temps of 83f max RH is at a decent 65%,i'd put some pics up but you cant see the problem with the shitty cam i got so it not worth it
 

resinryder

Rubbing my glands together
Veteran
Calmag should not be any kind of problem this early into them. When I start cuts in coco/perlite in 2 gallon smart pots on my E&F tables I start the feedings at EC-0.8 to 1.0 and go up from there as needed.
What medium is he using?
 
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