Mg def.? (pics 4th wk flwr.)

I've read so many posts and I think this shows Mg. def.?

Setup:
400W HPS
12/12 going on 5th week
light about 8-10" off tops

have ferted. with a bloom plus 10-54-10 in week #2
which seemed to burn them, so i haven't done any since.
They're in Fox Farm Ocean Forest with perlite. (2 gal. cont.)

What should I do....they seem to be not growing for the past
couple weeks.

it looks bad for a mg def.
flush them a few times, they look burnt more than mg def
how long have they been flowering for ?do u ph your water ? water when lights out ?
mybe try puttin a very small amount of epson salt in your water b4 watering them ,

they've been flowering for 4.5 weeks now.
I don't water when lights are out. How much water
should I put through them to flush? They are in 2 gal.
containers.

Thanks.

Mark. said:

it looks bad for a mg def.
flush them a few times, they look burnt more than mg def
how long have they been flowering for ?do u ph your water ? water when lights out ?
mybe try puttin a very small amount of epson salt in your water b4 watering them ,

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Ummmmmmmmmmmm

markyfunk said:

What should I do....they seem to be not growing for the past
couple weeks.

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Hiya markyfunk

Your plant is suffering badly from nutrient burn and nutrient deficiency, but it's not Magnesium, it looks like a multiple deficiency to me and particularly Phosphorous.

See those purple bands on the leaves? Classic P deficiency.

Your deficiency is worsening because you're not feeding it anything - you can't just stop feeding because you burnt the plant earlier on - you need to understand your nutrient and what the correct dose to feed at. 10-54-10 is pretty high in P, which is probably why you burnt the plant.

I'd suggest you start it off at a 1/4 dose than recommended as that will get you something like 2.5-13.5-2.5, which should be fine to start with. Start feeding that at every other watering (or nutrient feed, plain water, plain water, nutrient feed) - feed it plain water inbetween and watch closely for possible burning.

They won't grow - they're stressed and stunted from first a nutrient overdose and then a nutrient deficiency - the plant needs those nutrients to grow.

Thanks. so should I still go ahead and flush first. Then start feeding?
After i flush, should I wait a few days before feeding them first?

Also now that they're into their 4.5 weeks of flowering, should I only
feed through the soil or foliar feed?

markyfunk said:

Thanks. so should I still go ahead and flush first. Then start feeding?
After i flush, should I wait a few days before feeding them first?

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If you've been feeding them plain water, there's no need to flush them.

markyfunk said:

Also now that they're into their 4.5 weeks of flowering, should I only feed through the soil or foliar feed?

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Only feed through the soil at your stage in flowering otherwise you risk bud mould and leaf spot fungus.

It calls for 1/4 tsp. per gallon. (10-54-10) It seems
like if I cut that by 1/4 I'm barely putting any nutes
in the gallon of water, but I guess that's correct.

before i bought my tap water filter i was using gallons of drinking water from the store. I put the correct amount of nutes in the gallon for future use. after about 2 days i starte to see cloudy white spots in the water kinda looked like shredded toilet paper but in small amounts. I dumped em. Im not sure if it was the nutes or the water or bacteria? anyone else see have this problem?

if you are watering this when the lights are on then thats how you are burning it
the heats suckin the water up through the plant an burning it .
there could b bit of mg def or also nute. def. im not sayin baby grow is wrong
i dident think it was nute burn becouse u havent feed them in 2 weeks but there could b some locked up

flush with about 4-5 bottles of water make 1 bottle with a nute mix its good 2 flush with nutes
only use water for a day or 2 after flushing
then feed them with half the dose you normaly would to start of with an build it up, still go ahead an add a small amout of epson salt in your water too would do any harm

only foliar feed when veggin or very very early flowering

its only weed just stick 2 the rules an it does the work its self

bat gauno would be good to mix in your soil at this stage of your plant

this happened to one of my plants and it hasnt growen a inch since 4 week ,it stopped growing 5week into 12/12. ive no pics but my plant looked same as yours ,size. age. hope you get yours back healthy.

watering your plant when the lights are on is the reason why they are burning
if you dont keep the ph levels correct in your water that causes mg deficiencys it will lock out nutes and wont be able to recover properly from the damage from over feeding 1st time

Good info. I hadn't heard to only water at night before. Is there any sort of light spectrum that they can't see - but I can? Meaning I could see what I'm doing in the dark period trying to water them. Would using a small flashlight F them up while they're dark?

markyfunk said:

Good info. I hadn't heard to only water at night before. Is there any sort of light spectrum that they can't see - but I can? Meaning I could see what I'm doing in the dark period trying to water them. Would using a small flashlight F them up while they're dark?

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It's not good info at all, it's complete rubbish.

He's referring to not foliar feeding when the lights are on, not about root feeding - you can do that at any time lights on or off. It's best to water plants in the morning (or early in their lights on cycle) so they can use that throughout the day.

Don't start disturbing your plants during their lights off cycle - that's a sure fire way to start producing hermies. You shouldn't need to visit your grow-room during lights off and you certainly don't need to root feed them at that time as I've already said.

I do wish people would say nothing than give people bad information. That's twice now that person has done this in this thread.

i says feed when lights out baby gro if hes watering his plants when his grow rooms at its hottest of course it will burn them !!

hes lookin to see if he can use a light like a small torch so he can see when hes watering his plants

yea think a small torch would me fine just shine in on the soil rather than the plants

babygo his ph levels are wrong an hes watering when lights on an hasent feed them in 2 weeks, an u says its nute burn if the ph levels are wrong it wont feed an if waters in the soil still its going 2 burn them leafs when the lights are burning hot no 1s talking about foliar feeding

Mark. said:

i says feed when lights out baby gro hes lookin to see if he can use a light like a small torch so he can see when hes watering his plants

yea think a small torch would me fine just shine in on the soil rather than the plants

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here come the hermies.

i water with my lights on. i'm in soil. my plants aren't burnt.

Mark. said:

i says feed when lights out baby gro if hes watering his plants when his grow rooms at its hottest of course it will burn them !!

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Root feeding with lights on doesn't burn plants.

Mark. said:

hes lookin to see if he can use a light like a small torch so he can see when hes watering his plants

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And I've already said and it seems I have to say it again. He doesn't need to feed his plants at lights out - he can root feed them at any time.

Mark. said:

yea think a small torch would me fine just shine in on the soil rather than the plants

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Any light (apart from green spectrum light) used during the plants 'dark period' will interupt their dark period and confuse and stress them.

Mark. said:

babygo his ph levels are wrong

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His Ph levels are fine.

Mark. said:

an hes watering when lights on

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I water my plants during lights on - are you trying to tell me I'm wrong?

Mark. said:

an hasent feed them in 2 weeks,

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He hasn't fed them because the last time he fed them he burnt them!

Mark. said:

an u says its nute burn

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It is nutrient burn - but it's also nutrient deficiency as well. The burn is from earlier on and the deficiency because he hasn't fed them for two weeks.

Mark. said:

if the ph levels are wrong it wont feed

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The ph levels for the SECOND time are fine.

Mark. said:

an if waters in the soil still its going 2 burn them leafs when the lights are burning hot no 1s talking about foliar feeding

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Are you still trying to tell me I'm wrong to water my plants at lights on?

Mark. said:

if you are watering this when the lights are on then thats how you are burning it
the heats suckin the water up through the plant an burning it .
there could b bit of mg def or also nute. def. im not sayin baby grow is wrong
i dident think it was nute burn becouse u havent feed them in 2 weeks but there could b some locked up

flush with about 4-5 bottles of water make 1 bottle with a nute mix its good 2 flush with nutes
only use water for a day or 2 after flushing
then feed them with half the dose you normaly would to start of with an build it up, still go ahead an add a small amout of epson salt in your water too would do any harm

only foliar feed when veggin or very very early flowering

its only weed just stick 2 the rules an it does the work its self

Click to expand...

just do that m8 an your plants will b just fine i dont water when lights on becouse if there,s still some water stored in your soil it will burn your plants i usealy just water them right b4 i turn my lights off
babygros just got his knickers in a twist with me thats y he,s actin like a big girls blouse lol

watering with the lights on burns the plants?!?!?!

i guess all the hydro, deep water cultures and aero gardeners are fucked!