Please help. Virus? Defiecency? Co2 burn? Light burn? Confused!

Having difficulty diagnosing. Hoping someone with trained eye has seen this before. Please help

So plants appear very healthy....these marks appeared on the top middle of the plant....starting on the tips of the fan leaves.....leaves appear very green and healthy except for these markings...These plants are entering their 3rd week in veg...just trasplanted from clones 3 weeks ago.....room is sealed with co2....my co2 controller did go outta wack a few times and dumped way too much co2 in the room ...but i have corrected it. Have co2 set at 800ppm temp at 82 degrees...right now i have 2 lights dimmed down to 500 watts each for the veg....I don't know if this could be co2 burn?.....the mosaic virus.....???....recently also I noticed my water filter started smelling a little like bleach so I'm guessing its time to change it....someone said that when this happens its starts releasing the filtered elements into the water...don't know if thats true....I've been staring at pictures on the net and in books for for 2 to 3 days straight.....Also might add that these came from the club and they had a few thrips...been using spinosad....I don't think this is water droplet burn as I been spraying in the dark period and only half of the room is experiencing these symptoms......I need some help...thank you.

first theres a heavy variation in color in your leaves. caused potentially by 2 things im aware of. extreme ph flux in watering.. by extreme i mean as much .7 or greater fluctuation in last 3 waterings... whats your PH. if you dont know you need a meter. this looks to me however like nute burn. what do you feed them whats thier growing medium. is this your first grow... CO2 definatly was NOT the culprit. your room can be have enough CO2 to displace oxygen and kill you and your plants would be fine so its not that. If its just a little burn breathe deep stay calm... absolutly everythings okay. its like hugging your gerbil too hard . his eyes will buldge but they go back in. only give your plant water with no nutes other than cal/mag... if you havent been giving them cal/mag buy some.. i use general hydroponics version and it works great. How often do you flush... you may be over doing it then pounding them with nutes .. Thats how i started out anyways. little ones are far more sensitive to their watering then when they get bigger... both sizes require much attention however. your soil could be pre amnded as well (already have nutes in it) and some veg. soils have a little too much nitrogen for cannabis.. answer as much of this as you can and someone will give you a more for sure answer. Also do you give them cal mag now?? could be a deficiency if youre using filtered water you almost have to use cal mag

Mr. Smithh said:

So plants appear very healthy....these marks appeared on the top middle of the plant....starting on the tips of the fan leaves.....leaves appear very green and healthy except for these markings...These plants are entering their 3rd week in veg...just trasplanted from clones 3 weeks ago.....room is sealed with co2....my co2 controller did go outta wack a few times and dumped way too much co2 in the room ...but i have corrected it. Have co2 set at 800ppm temp at 82 degrees...right now i have 2 lights dimmed down to 500 watts each for the veg....I don't know if this could be co2 burn?.....the mosaic virus.....???....recently also I noticed my water filter started smelling a little like bleach so I'm guessing its time to change it....someone said that when this happens its starts releasing the filtered elements into the water...don't know if thats true....I've been staring at pictures on the net and in books for for 2 to 3 days straight.....Also might add that these came from the club and they had a few thrips...been using spinosad....I don't think this is water droplet burn as I been spraying in the dark period and only half of the room is experiencing these symptoms......I need some help...thank you.

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You didn't say the Ca/Mg supplement you are using. Me I'd hit them with Cal Mag and then decide if I needed to give them anything else.

I'm using pro mix bx with added perlite ....no ammenties that I'm aware of except biofungicide and mychoraze added....nute line is Humboldt county;s own Deep Fusion Series....just transplanted 2.5 weeks ago..used half strength reccommended dose for veg...let medium dry out a little to stretch new roots just gave them plain water recently and now this happened so only 2 watrerings so far...I let them dry out a lil bit these first couple of weeks ...plants exhibited no signs of stress from lack of water or too much water...they appear to be thriving ....plants appear and look very healthy ppm of filtered water is coming out a 130 ppm right now. Runoff is coming out at 800ppm 7.0 ph currently...I don't know what you mean by variations in color the leaves in garden are a very green color....the only discoloration I see are these spots..

Would like to add that these are Chem Dawg 4.....My 5th grow....As I understand mag deficiency starts with yellowing...these leaves are green and it start at the tips with these burn streaks....at first I thought it was thrip damage.....I was worried this was a virus vectored in by thrips.... Is my co2 temp settings correct for veg?....humidity is 60%..

bump.......

bump......anyone else?

looks like you splashed a lil nute juice on the leaves ..doesn't seem like its anything to worry about unless the whole plant is doing it..if its just a few fan leaves its fine .. going haywire over a few specs on a fan leaf and adding a whole bunch of crap and totally screwing the whole plant up for a few specs

It's not nute splash....I don't splash at all when i feed them....Has anyone seen this burn pattern before????