I seem to run into this problem on each of my grows.. weird spots with tacoing.

S

sonofthorin

New Member
Hey everyone awesome forum you got here I've been a long time lurker.
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I have been following this feeding schedule using the full line of biobizz, for the first time basically a 1/4 of what's recommended.
i've run into this problem since I got this lamp this is my fourth grow now with this lamp. its been the same if i used full dosage or half and yeah now this dosage.. just wanna give as much info so I can get the right help. However I do tend to grow some huge plants that goes way up to the lamp we are talking 3 inches away at most, I have tried turning down the lamp several times (never went below 75 in power on it) but now i have turned it down to 60 procent as of in tonight, (from europe) because I am certain this has something to do with light issues.. any help is much appriciated.

not sure how the rules goes but its a tsw2000 from mars hydro if i am not allowed to write the name please tell me and i will remove it.
 

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Rocket Soul

Rocket Soul

Well-Known Member
Do you measure EC in and EC of runoff? Looks like you got some burnt tips which could be either too much nutes or too much light. Also look at those bright red petioles, thats a sign of plant stress.

What is your environment like? Max temps/rh and average for day and night?

If you let the plant grow within 3 inches of the light youll get light burn problems, no doubt. Flip earlier or get a taller tent.

Not sure i have solution for you but with above details someone should be able to help. Good luck.​
 
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Southernontariogrower

Southernontariogrower

Well-Known Member
My first thought is low ph, yellowing and necro spots lead me to this conclusion. Its what happened when my ph pen wasnt stored in solution. They can be very tough little plant. After doublechecking pics ld say calcium def. Double check but at lower strength nutes might be lacking.
 
Rocket Soul

Rocket Soul

Well-Known Member
Mars par map for that light gives 1100 ppfd at max 18" away. I agree with SOG above, this is what calcium def looks like but the reason hes seeing this is likely too much light. At 3" distance there is no amount of calmag that fixes the defs.
 
hotrodharley

hotrodharley

Well-Known Member
sonofthorin said:
Hey everyone awesome forum you got here I've been a long time lurker.
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I have been following this feeding schedule using the full line of biobizz, for the first time basically a 1/4 of what's recommended.
i've run into this problem since I got this lamp this is my fourth grow now with this lamp. its been the same if i used full dosage or half and yeah now this dosage.. just wanna give as much info so I can get the right help. However I do tend to grow some huge plants that goes way up to the lamp we are talking 3 inches away at most, I have tried turning down the lamp several times (never went below 75 in power on it) but now i have turned it down to 60 procent as of in tonight, (from europe) because I am certain this has something to do with light issues.. any help is much appriciated.

not sure how the rules goes but its a tsw2000 from mars hydro if i am not allowed to write the name please tell me and i will remove it.
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Strongly recommend a cheap but effective PAR meter.
 
hotrodharley

hotrodharley

Well-Known Member
Rocket Soul said:
Lux meter works fine aswell. Usually over 50k lux is hard to grow with especially leds. But even lower numbers can work great especially if its white + red.
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You're talking about people with so little experience or knowledge who place lights 3" above at 75% power. And you expect them to use the conversion math?

Buy a damned quantum meter. You people spend thousands on everything else and then get chintzy over $150? Lol.
 
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