Help please

Hi guys can anyone tell me what's happening to my plant

Grown in biobizz light mix
300 watt true watt mars hydro led
Fox farm nutes
Fast n vast auto
10l pot

Have this problem every grow n I'm baffled to wat is the problem

Phd watering 6.0 to 6.3 ph is right coz I calibrate my tester using a ph buffer

24/0 light cycle

I was watering with tap water without letting it sit for 24 hours before watering could this be the problem (chlorine)

I also flushed at 3 weeks due to nutrient burn n only added flowering nutes (tiger bloom 1/2 strength could it be that I should of added more nitrogen because the nutrients has been flushed from the soil

Also the yellowing started at the bottom leaves n worked it's way up

Thanks guys

Also she's 5 weeks 2 days old

N way last grow the list went yellow n then went to crisp at 8 n a half weeks

Hope this helps

Greenfingers1987 said:

Hi guys can anyone tell me what's happening to my plant

Grown in biobizz light mix
300 watt true watt mars hydro led
Fox farm nutes
Fast n vast auto
10l pot

Have this problem every grow n I'm baffled to wat is the problem

Phd watering 6.0 to 6.3 ph is right coz I calibrate my tester using a ph buffer

24/0 light cycle

I was watering with tap water without letting it sit for 24 hours before watering could this be the problem (chlorine)

I also flushed at 3 weeks due to nutrient burn n only added flowering nutes (tiger bloom 1/2 strength could it be that I should of added more nitrogen because the nutrients has been flushed from the soil

Also the yellowing started at the bottom leaves n worked it's way up

Thanks guys

Click to expand...

at 3 weeks old you fed flowering nutrients, why?
chlorine kills microbeasts in the soil, dont do that, will slow growth, whack ph,etc.
flushing dirt did not fix a plant nutrient burn or help anything.

rosenthal, cervantes, http://catnews.org/FREE Pot Books/ , these can help more than you know, good luck

Looks like it needs more nutes to me, N deficiency maybe?

I use tap water and have for years never had the problems you are having so i wouldn't say its that, I run a RDWC system and use tap water for this which i do not let stand and i have no issues with chlorine.

Usually when they yellow from the bottom up its the plant using up its store of nutrients because it isn't getting enough from your feeding!
This also happens when people do extended flushing towards the end of flower to rid the soil of salt. imo just stresses the plant unnecessarily, if your plant is turning yellow its struggling for the nutes it needs.

Happy Growing

Here is my two cents worth.

1) Dechlorinate your water. Leaving it out in a 5 gallon bucket does not take much work and saves you millions of beneficial microbes. Maybe an rdwc system doesn't need the beneficial bacteria Colony that an organic grow needs or the aeration removes enough of the chlorine.
2) Use light mix only in the seedling section. Try Fox Farms ocean Forest. Put a solo cup in the Middle with the bottom cut out, fill it with light mix for your seedling then lift the cup out. Once the seedling has a big enough root system to reach the ocean Forest it will be able to handle the hot nutes. The ffof should feed them for the first 3-4 weeks. If they start to yellow, give them LIGHT veg nutes till they finish thier stretch.
3) a little bit of yellowing of the bottom leaves is normal towards the end of flowering. That's what they're there for.

My first grow I used autoflowers. Five gallon buckets with Roots organic and Light Warrior for the center. Didn't feed them for six weeks. There was a lot of yellowing before I found out I still had to feed them. The tallest was 40" and still produced 1/4 lb.

Greenfingers1987 said:

Also the yellowing started at the bottom leaves n worked it's way up

Click to expand...

Probably caused by a lack of Nitrogen. Nitrogen gets transported around a plant to where it is needed so if the plant is lacking then it will get yellow leaves near the bottom and spread from there.
Most auto's take 70 days, some a little less or more, but 70 should see them ready for harvest.
Your plant looks hungry to me. It needs feeding grow nutrients AND bloom pretty much all the way through but the grow nutes amount should be decreased and the bloom increased. Look for a feeding chart on the website of the nutes manufacturer.
Don't worry about chlorine. Most will have gone already by the time the water comes out of your tap. Leaving it standing could result in a build up of bacteria or bugs getting into it.
Start by giving your plant approx. 3ml/l of grow to get the N back up and a bit of bloom...say 2ml/l...that should help to get it back on track. If your plant goes dark green then it has too much N so you need to get the balance right and you'll see the correct colour in the leaves.
Good luck!

chemphlegm said:

at 3 weeks old you fed flowering nutrients, why?
chlorine kills microbeasts in the soil, dont do that, will slow growth, whack ph,etc.
flushing dirt did not fix a plant nutrient burn or help anything.

rosenthal, cervantes, http://catnews.org/FREE Pot Books/ , these can help more than you know, good luck

Click to expand...

Thanks for the link dude!
He's feeding bloom nutes 'cos it is an auto, most auto's start their bloom stage at 2-3 weeks I believe.

StonerCol said:

Thanks for the link dude!
He's feeding bloom nutes 'cos it is an auto, most auto's start their bloom stage at 2-3 weeks I believe.

Click to expand...

right, I always fed my auto's grow formula along with bloom feed until mid cycle, because they're vegging too along the way. If I dont....

same issues arise.

chemphlegm said:

right, I always fed my auto's grow formula along with bloom feed until mid cycle, because they're vegging too along the way. If I dont....

same issues arise.

Click to expand...

Personally I'd just ditch auto's as a beginner - not that you are - but they can be confusing to someone who doesn't have a bit of experience with photo's. Auto's aren't great to learn with imo.

StonerCol said:

Personally I'd just ditch auto's as a beginner - not that you are - but they can be confusing to someone who doesn't have a bit of experience with photo's. Auto's aren't great to learn with imo.

Click to expand...

havent grown one in years but they were fun, sometimes, like 1 of 4 was fun. I agree, can have way more fun without Rudy in my life.
admittedly Mephisto has piqued my interest. I dont recall using his hear but it looks great.
I bet they came a long way since my Joint Doctor days......lol

Sorry for jumping in on this post ,,,,but was wondering u guys can give us some info on how my plants are looking coco/perlite soil,250w hps bio grow nutrients temps are kinda always high in the room between 26 and 31,,, humidty 40-70 % just under 4weeks old this is my 2nd grow 3x auto midnight express, 3x auto sin tra bajo , x2 cherry bomb , auto blue dream,

Lukester said:

Sorry for jumping in on this post ,,,,but was wondering u guys can give us some info on how my plants are looking coco/perlite soil,250w hps bio grow nutrients temps are kinda always high in the room between 26 and 31,,, humidty 40-70 % just under 4weeks old this is my 2nd grow 3x auto midnight express, 3x auto sin tra bajo , x2 cherry bomb , auto blue dream,

Click to expand...

Looks ok to me....some leaves appear to be a bit droopy but that could be cos the plants have been recently watered.....

Lukester said:

Sorry for jumping in on this post ,,,,but was wondering u guys can give us some info on how my plants are looking coco/perlite soil,250w hps bio grow nutrients temps are kinda always high in the room between 26 and 31,,, humidty 40-70 % just under 4weeks old this is my 2nd grow 3x auto midnight express, 3x auto sin tra bajo , x2 cherry bomb , auto blue dream,

Click to expand...

Hey man they look good a little stretched out but apart from that not bad at all. You do have a lot of plants for 1 x 250w hps, you really could do with a 600w at least for that amount of plants.

600w is good for 1m square to 1.2m square. I run 2 x 600w in a 2.4 x 1.2 tent and really that could do with being 2 x 1000w(I wish)
You would get so much more from a 400w or 600w hps and add some more ventilation to reduce heat. From a 250w to 600w you would at least double your yield and massively improve the density and quality of the bud.

Hi guys thanks for reply an info on a tight budgt but will upgrade to either a 400 or 600w or even go for a decent led grow light ,nedd ye help tho think i may have over water them or something fed them yesterday plai ph'd water reading about 6.3 on the ph metre ,fed them around 1-2litres each throught a 10l pot enough for a couple of seconds run off,think i might have over done it , an seems tha new growth etc has started turning a light eyllow on some of them tried to get the best pics i cud with this shit tablet haha need ye help guys dont want them slowed down or yeild to be effected