Can't figure this out..............Calcium excess??

Hey all, it's me again lol........

Lights: 600w hps
Medium: Canna Terra Professional Plus
Nutrients: Mega Crop fed almost full strength every other watering ph'd at 6.3-6.8
End of week 3 since flip.

Can't find anything that looks like this on the internet........Please help!

Cut back on the Nutrients for awhile until they start to look better, the PH looks okay, a bit on the hi side of the alkaline, 5.8 to 6.4 would be optimal in that medium, they don't look to far, cut back they should come back in a week or so.

Good luck.

I thought the the mega crop feed chart was wacky when I used it

What is the ppm of the nutes you are feeding every other watering.

I don't know the ppm but i'm giving them 4 grams per gallon of water.

Bernie420 said:

I thought the the mega crop feed chart was wacky when I used it

What is the ppm of the nutes you are feeding every other watering.

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Why?

Herb & Suds said:

Why?

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why ask why

Genki88 said:

Hey all, it's me again lol........

Lights: 600w hps
Medium: Canna Terra Professional Plus
Nutrients: Mega Crop fed almost full strength every other watering ph'd at 6.3-6.8
End of week 3 since flip.

Can't find anything that looks like this on the internet........Please help!View attachment 4402695View attachment 4402696

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That is caused by too much light intensity, I have the same thing going on with mine right now. In what size tent are you running the 600 watt lights in? I have a 3x3 running 600 watts and my leaves are burning just like yours. You could move the light higher up, or dim the ballast if it has that option.

and.....possibly compounded with a lil cal / mag def. Especially possible if that medium has much coco in it and/or using RO/low tds water. Mega Crop is a touch low in mag and cal for hi-perf indoor, many add some epsom, some calimagic.

48 x 48 x 80

Genki88 said:

48 x 48 x 80

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hmmm, that tent is big enough for that light. are the temps ok? under 80 degrees? Is that an open reflector or does it have glass under the bulb?

Tint may be on to something with cal/mag def. and if so, I have the same problem

I am going to follow this post because I am curious as hell

Genki88 said:

temps are 23 at night and up to 27 with lights on. Light is in an air cooled hood.

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It may be more than a light intensity problem

i think so..........the burning seems to have slowed down, fingers crossed.

Genki88 said:

i think so..........the burning seems to have slowed down, fingers crossed.

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you could maybe give them a bit 1/4 tsp. or so per gallon of Bio Ag's Cytoplus or TM7, in case it is a micro-nutrien deficiency

feed some water phed properly to a run off of at least 30%
Leave them a week and they will be a okay

Mcoocoo said:

you could maybe give them a bit 1/4 tsp. or so per gallon of Bio Ag's Cytoplus or TM7, in case it is a micro-nutrien deficiency

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youd be better off giving them a full strength spray and make sure you put a big ass fan on them
But at 6.5~ he shouldn't be getting lock outs

yes, but what is his actual soil pH?

Mcoocoo said:

yes, but what is his actual soil pH?

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thats why id go with a full strength foliar spray and flush it good