wtf is this

Hi guys, need help asap... spotted this today on lower fans

Strain: White Widow Feminized (From Seed)
Germination Rate: 18 / 20 (90%)
Current Plant Height: 22 inches
Current Pot Size: 4 gallon
Lights: 2x 600w HPS Lamps (1 foot from plant tops)
Room Humidity: 50% avg
Room Temp: 83F (28c) avg
Water PH: 7.5

Grow Medium:
- 5% Premix
- 10% Worm Castings
- 20% Sphagnum Peat Moss
- 35% Peat
- 30% Perlite
- PH of 6.5

They are on Day 23 of budding,

I am flushed the soil for the first time yesterday and pulled off the old yellow leaves, however today it only seems to be getting progressively worse and further up the plant!!! on one of the plants one of the top fan leaves have started going this way!?!

I have been using Biobizz Bio bloom 5ml per Liter.. which is the recommended dose. Theres no fungus, mold, or bugs in the rooms at all..

OK, first off a basic knowledge of wat ur using would help man. (soil or hydro;wat lights, nutes,ect..) and second to me it looks like that leaf is starving but a pic of the plant will help ALOT too.

as u noticed not really anyone answered ur post.....u GOTTA be more descriptive than this.

Hope this helps.

Worm

FuZZyBUDz said:

OK, first off a basic knowledge of wat ur using would help man. (soil or hydro;wat lights, nutes,ect..) and second to me it looks like that leaf is starving but a pic of the plant will help ALOT too.

as u noticed not really anyone answered ur post.....u GOTTA be more descriptive than this.

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I agree with FuZZy, but from what I see this may be magnesium def..

please guys i really need your help, flushing didnt work... should i foliar feed?

wrestler.
I agree with worm, it looks like magnesium deficiency, but as I've learnt these guys need the whole story and pics. Just try this... get some "Epsom salts" better known as magnesium sulphate, and mix into the soil/water. If soil, then mix it in direct or with water, just a half a tea spoon. That should solve it. You can get Epsom salts from any chemist, if the pharmacist asks what they're for (some do as a health and safety issue, incase you decide to digest thinking its salt to cook with) tell them your using it as bath salt.
Let us know how it works for you. Hope it works brov.

Ok thanks ill try that

It cant be a ph problem or nute lockout can it? Since I flushed them yesterday with atleast 5 times the pot volume?

Many thanks

check ur PH dude

Axelbro said:

check ur PH dude

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The soil ph had dropped to 5.0 before I flushed, now its near nutral.

I've foliar fed today with Epsom as the soil was still very wet.

you have 1200 watts 12 inches from your plants? Looks like light bleaching to me. also, to those who asked for more info about his grow he explained that in his first post.

55% peat will hold one hell of alot of water could be root damagefrom overwatering

i had this, i flushed my plants and they where fine. flushing is a good thing to do reguarlly in my opinion

wrestler007 said:

Ok thanks ill try that

It cant be a ph problem or nute lockout can it? Since I flushed them yesterday with atleast 5 times the pot volume?

Many thanks

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personally i reckon it was nute lockout,

robert 14617 said:

55% peat will hold one hell of alot of water could be root damagefrom overwatering

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I never over water, i always let the soil completely dry out and allow a few fans to start drooping even sometimes...

BKCSG said:

you have 1200 watts 12 inches from your plants? Looks like light bleaching to me. also, to those who asked for more info about his grow he explained that in his first post.

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Its two 600 watters over 9 plants each. There about 15 inches from the top now, no sign of burning on any of the top colas tho...