Leaves starting to show discoloration

Hello first time grower here. I have looked over quite a bit of information regarding marijuana leaf issues and possible causes but am unsure what this might be. Growing conditions consist of a 4x4x6 tent (one side currently unzipped and open as I’m just in the vegetative stage) with a 600w mh bulb using an air cooled hood. It is air cooled with a 4 inch in line fan that has a filter. Bulb is a bit over 2 feet away.

the plants are feminized Dutch passion blueberry strain and there are 5 they all seem to have this same leaf issue. I watered them twice so far one of them being about 7 hours prior to these pictures as I wanted to see if watering would help. Soil is fox farms ocean forest and these seeds were planted 1/7 so roughly 10 days old.

Any advice out there is definitely appreciated

I see what you're talking about.. there shouldn't be any deficiencies this soon with ocean forest soil..
Some indica strains I've grown in the past had a marbled look..
The leaves kind of have the look of the start of a cal/mag def.. but like I said there shouldn't be any deficiencies this soon..
You're not ph.ing your water are you? If so there is no need with this soil..

farmerfischer said:

I see what you're talking about.. there shouldn't be any deficiencies this soon with ocean forest soil..
Some indica strains I've grown in the past had a marbled look..
The leaves kind of have the look of the start of a cal/mag def.. but like I said there shouldn't be any deficiencies this soon..
You're not ph.ing your water are you? If so there is no need with this soil..

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Hey thanks for the reply! I haven’t checked the ph of the water and it is tap water but have read to leave it out for 24 hours to let chlorine evaporate so have done that. I did let it get very dry before watering but they didn’t seem to sag or show any other signs of under watering so I’m not sure if that may be causing it

Get a aquarium pump and air stone and put it in the water.. this will help get rid of the chlorine by oxygenation along with leaving out 24 hours..

farmerfischer said:

Get a aquarium pump and air stone and put it in the water.. this will help get rid of the chlorine by oxygenation along with leaving out 24 hours..

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I like this idea. Will definitely try that

Ocean forest is sometimes is alittle hot for young plants but I've never had any long term problems from it.. I'd let them go for a few more days and see if the problem gets worse.. other then the marbling they look good..

farmerfischer said:

Ocean forest is sometimes is alittle hot for young plants but I've never had any long term problems from it.. I'd let them go for a few more days and see if the problem gets worse.. other then the marbling they look good..

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Ok awesome I’ll keep an eye on them. So far it hasn’t slowed the new growth I don’t think just got worried when I saw that but the nutrients in the soil make sense since they are young. As time goes on nutrient levels will go lower so if that’s it then it will stop. Thanks for the help and advice on this

Yeah the new growth looks good.. just give them a bit to acclimate..

Some others here may have some insight, but from my experience I wouldn't stress to hard on it just yet..