Veg tent: 60x60x140cm DR
Light: 400 MH
Plants: 8 x BB Cheese
Age: 4.5 weeks
Pots: 1.5ltr
Compost: B7Q Multipurpose with John Innes
Extraction: TT 125
Intake: Passive


The lower leaves are yellowing ad crispy to the point I though them and they crumble.

I stuck a extractor in the top after advice here as my temps were 90f....now its 100?

As you see in the pic the extraction is at the top, whereas the light is very low. Can I extract from the bottom for now?


Do I have any other problems to the trained eye?

lights to close and john innes is to strong for your babys give them a flush

I know heat rises but im amazed the temps have gone up with extraction in. Ill leave it.


How do I flush? Im new to compost you see. So its burn?

I was recomeded B&Q Seedling soil, and then B&Q Multi with JI on here.

400 in that space I would say that TT125 should be used as your passive intake and get something like an RVK150 and a cooltube for the 400 IMO.

Best of luck.

Cant get another fan just yet so ill have to try and work around. Bloody credit cruch!

I do leave the door 2/3 open during light hours.

is that your ballast I see?

Ballast is to the right outside the tent. That thing at the front is a 6" clip on fan. Its shite, dont waste your money on one.

If your leaving the tent open make sure you've got plenty of bug strips

So this flushing?

Can't tell exactly how far that light is but you should allow about 12 - 16 inches for a 400 maybe a bit more on babies till they toughen up. To flush I just use the shower on body temp and put 3 or 4 times the water capacity of the pot thru it, not 100% tho as only a newbie myself, good luck pal.

So fill pot up with shower, and drain x 3

That dilutes the nutes?

is a small tent for a 40 but you can get away with it - run your extractor 24hrs - ensure all the holes are open in the tent for passive then you should be able to close the door - also if you can get away with it - turn down/off the heating in the room.
And as above with regards to flush - but try to use PH'd water if you are running a lot through it

Running your extractor like that with the flap open you're just cycling air through it but not actively drawing it up over the plants. A lot of the heat is getting trapped by the reflector. It'd be more efficient with the door closed but all the passive vents open, and a length of ducting attached to the input of the fan and drawing from the end of the reflector.
I'd lift the lamp to more like 36" for babies too.

Forget flushing mate if you havent fed

You cant just flush nutrients out of compost like that

Its your environment that causing your problems

Owd

light is to close raise it to 500mm little babys cant cope with that intensity

They certainly dont like the soil, it will probably take weeks if not months to turn them around, I would start again if i was you, dont waste electric on them.

Id be swapping that 400mh mate for a 250hps

They look like they are frying to me.

They also look hungary aswell...but sort out the heat first,how big is your extraction fan?

Ive got a dr60 aswell and rekon its way to small for that light.

p&q

Reckon I should just go for a 250 cfl? I have a lampholder, just need bulb and shade.

Not what you want to hear mate but I think Stealth has a good point here.

Have a look whats needed for a dr60 in this link,sort your enviroment out then the plants.

http://www.greenshorticulture.co.uk/Grow-T...ackage-1208.asp

p&q

Ill sell the 400w Ballast, Reflector & Bulb..what they worth?

And buy a 250 cfl.

This is a new tent im using for veg. Im slowly building upwards.


So light ill sort. Regarding the plants, can they be saved?

pull that light well away from them
even up to a metre

Regarding the compost (B&Q Multi with John Innes) how do I deal with this?

burn baby burn

Why is it the lower leaves burn and turn crispy if its the light buring?...but tops are ok?

you want john innes for the flowering its packed with chemicals

Ok so I need to change soil for the veg. Any recomedations?

I sold my 400, ballast, hood n rollers for about £50. Bought a 250w HPS cooltube and that was for a 1x1x1.8 Budbox with a TT125 on exaust and the TT100 on intake. Temps in there are 25-26 lights on and 16-17 lights out.

In the Veggin room 60x60x120 I've got a 110w maxibright light, One of those 6" clip on draper fans(mine are fine ) blowing the heat away and a couple of bathroom fans for air flow with tights over(gift from the missus). Temps in there are always between 25-26degree.

john innes no3 for potting on to flower innes no1 for your wee babys

Ill have to get some soil 2mo.

Ill be gettig rid of a 400w ballast with reflector, 400w MH & 4 gang contactor...what you thik price wise?

Choose a different soil next time. The colour of your plants is nothing to do with light spectrum.

dont get rid of your light just get a new one can never have to many lights

Its mixed on here wether its the light or soil.

So my question now is.........can I flush this soil, the re-pot into lighter soil?


Me personally think its the soil due to lower leaves burning. If it was light it would be top.

Will john innes 2 be ok?

no2 will be ok still think that light is to close

Im going to move the light to 1 mtr till I can sort that. In the mean time ill get some no2 from B&Q.


In my last hydro grow I left the light a good distance whe I went away for a week. Size when I went was 6"....7 days later....28"

hello m8....
its definetly your enviroment,those temps were way to high,dont look like there recover to me
might be best to start again & get better extraction
best of luck though...

Allright SAPFO,

F'kin hell what have you done to those plants? I'll agree with fried by the light diagnosis. You've got 100w per square foot there...that's too much light, and your temps are to hot. There are also probaly fucked for all the repotting and different composts you have used - they also look really wet in that pic - probably becsuse they are close to death and are not sucking up the water.

Bin em, they ain't gonna recover - sort out a more suitable light for your little veg space and start again. Practise with some cheap seeds. No offence but you don't appear to have any natural 'green fingers'.....

Personally wouldn't recommend pure JI composts, but horses for courses. My preferred is B+Q cuttings and seedlings for 1st post, a mix of this with Westlands MP + JI for second, and pure Westlands MP + JI for later potting up. But then others will tell you they have probs with Westlands.......

When you are buying compo from the GC make sure the bags haven't been stored out in the rain ...

havent read the thread through yet but the first thing that jumps out is your soil it looks compacted waterlogged and heavy roots like a loose aerated medium that john innis is ok but you need perlite in it to allow drainage and aeration. will read on..

You need to downgrade your lighting and lower the temps to get the right enviroment before you go any further.

Throw those poor excuses you call plants, sorry to sound blunt, but I'm trying to save you money and time, even if they do recover your probably looking at a couple of months.

And if your new to growing in soil, you should stick with the BioBizz soils and nutrient range, plenty of experienced people on these boards to give you good advice on BioBizz. Buying soil from the DIY/garden stores is best left to the pro soil growers who know what theyre doing.

On the other hand forget the soil and come over to hydro, growing in coco is simple and doesnt have to be hard, in fact some would say its easier.

Keeping it simple you for the compost in addition to the Seedling compo you want a 'Multipurpose with added John Innes'. <<< Bluepixie, remember you recomended this soil? Although not B&Q.

Pics today..

What you think today?

Yep i remember, and stand by the advice as it's always worked well for me, I've not tried the B+Q brands except for the seedling compost.

That new growth looks a bit happier - it that since you've raised the light right up?

The compo in your pics looks a bit odd. Is it the peat free version or the normal? Peat free MP's are generally not recommended.

Click to view attachment Click to view attachment

Its peat free. I managed to get a better pic today, they have looked like that all the time, just bad angles before I suppose.

Light is up, extraction in. Temps at 85f now.


There is new growth at the bottoms where the leaves have gone cruchy and ive removed them, but them leaves are yellowing. Is a soil change possible/needed, as I can visit B&Q 2mo?

wouldn't the perlite effectively weaken the strength of the compost as well so its not so strong and burning the seedlings?

i can't see it being the light if the tops are ok

I think that too. After all, the sun was way hotter aint it?

So its soil, what is my best option from here. Will they grow into this, or do I need a soil change?

Ok - that's not a good choice. Very commendable from a environmental point of view, but probably not very good for growing canna - get yourself a regular peat based MP with added JI. Do some more reading of in the compost forums. The info is all there.

Your light is a problem - it's too much light for the small space you've got.

Ok so after reading the compost trials page im going to go for John Innes 2 for now.


Will I be able to use the current one later, or should I bin it? I have about 90lts of the stuff still.

OK?

Those plants are begging to have the plug pulled. Bin them and start again.

eta. John Innes is crap it sets like concrete.

Why bin them? Id have to buy seeds again, £30 straight up + I aint got time on my side for a full cycle new batch, (house move) so id rather see what can be done with these.

Im going to go the hydro shop monday and ask them what compost to use. Its too confusing here.

My point is it will take longer to nurse them back to health than it would to pop some more seeds. Dont spend £30 on seeds until you know what to do with them. £10 nirvana seeds and a bit of tlc.