New Shoots/leaves lime green/ PLS HELP!

I cant post pics JUST YET, however will do my best to let you know the score.

Northern Lights bought from Sensi Seed bank....Feminised.

250HPS.....small cupboard.

very good ventilation and nice mini fan.

Only one plant.

It is just over 3 weeks old. Been growing very very fast. Internodes at 7/8. Nice bushy plant.

Nutrients are BioBizz. I have it all, Grow, Bloom, Top Max, Root Juice, Alg-A-Mic and Bio Heaven oh and that Leaf Spray....

I just today switched to 12/12....but till then obviously 18hr on. 6 off.

Ive been using every watering Grow, Root Juice, Alg-A-Mic and Bio-Heaven. I am worried if I over did it with the Grow??

PH levels....sorry dont know. I know that sounds bad but dont have a metre.

I put some crushed eggshells in water yesterday morning and drenched the soil last night and then added a bit of Bloom to try and kick start the flowering.

When I had a look at the plant this morning the new shoots had greened up a bit and it looked better.

So im confused.....what usually is the problem when the new shoots are a limey yellow color? couldnt not be not enough N and I gave it plenty of Grow.
I wonder if the acid was too high and by giving it a good water with eggshells if that fixed it?

Thanks for the help in advance!!

not sure a pic would help but if you give a plant alot of nitrogen the leaves do turn a daker green and new shoots may be slightly lighter in color so not sure that its anything to worry about if its yellow would probably be finding out the ph.
you just switched to flowering would hold of on the bloom nutes for a couple of weeks your plant will flower when its ready you cannot kick start it by feeding bloom nutes.

is that right.....I heard/read that by giving it bloom nutes you influence flowering......what not even at say 1/2 dose?

flowering is influenced by the amount of total darkness your plant receives

and you say you give them nutes at every watering?you only want to add nutes every 2nd or 3rd watering or you risk burning your plants and even locking out the nutes,if there's too many nutes available to a plant they get locked out and the plant can't take them in,

i'd start at the beginning,check the stuff that wont do any more damage,i'd maybe try flushing it with lots of fresh water,then leave the nutes out for a week or so,see if it improves,if you try giving it lots of different nutes to solve the problem you may in fact only make it worse,all too often what looks like deficiencies is actually overdose

Thanks atsar, and whilst I would agree with you and do in a way, the biobizz instructions say to add with EVERY watering. However, I too think it could be a bit too much.....the plant is growing WILD....really nice....however its just the yellowing/lime colour of the new shoots, so I would say something is wrong and would probably think it is being overfed. I will know it back....I might give it a couple days and then start up with a dose of biobizz grow every second watering, bioheaven at 1/2 dose with every watering and give it BLOOM twice a week until hairs start forming.....
any thoughts on this?

What kind of light were you vegging with? You do know the HPS makes things look a lot yellower, don't you?

no I didnt know that, but that would make the other leaves look yellow took, it is quite distinct with the new shoots.....very much so....

I emailed a guy who works for biobizz. I sent pics and he said I overwatered.
now, the leaves are not droopy. the plant looks healthy, all leaves APART from the new growth which is lime/yellow.

does this sound right to you? what is usually wrong with a plant when it looks healthy all round but has yellow/lime shoots??

Have the leaf veins remained green? If so, I'd be looking at Fe (iron) def. If not, I'd be looking at Zn (zinc) toxicity.

Either way, this is going to be a pH issue.

What ya gotta do-

Go out and buy a pH test kit- range of 5.0-8.0 or thereabouts. A fishtank kit doesn't have a wide enough range for our purposes.
Pick up a little DISTILLED water- must be without dissolved minerals for our purposes.

Take a soil sample FROM THE ROOT ZONE- not just from the top of the pot. pH in soil can vary a LOT according to depth.

Put your sample in some distilled water- shake it about, mix it up really well. Let settle.

Now do a pH test on the water that you've exposed to your sample, according to packet directions. You'll get an accurate reading.

Test kit should run about $7US- good for a hundred tests. Distilled water will run about $3US/gallon.

Remember to treat this as labwork- rinse w/ distilled between tests, keep stuff clean- cap the test vial, don't just put your finger over it.

Hope this helps.

Quote:

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Originally Posted by rhizome

Have the leaf veins remained green? If so, I'd be looking at Fe (iron) def. If not, I'd be looking at Zn (zinc) toxicity.

Either way, this is going to be a pH issue.

What ya gotta do-

Go out and buy a pH test kit- range of 5.0-8.0 or thereabouts. A fishtank kit doesn't have a wide enough range for our purposes.
Pick up a little DISTILLED water- must be without dissolved minerals for our purposes.

Take a soil sample FROM THE ROOT ZONE- not just from the top of the pot. pH in soil can vary a LOT according to depth.

Put your sample in some distilled water- shake it about, mix it up really well. Let settle.

Now do a pH test on the water that you've exposed to your sample, according to packet directions. You'll get an accurate reading.

Test kit should run about $7US- good for a hundred tests. Distilled water will run about $3US/gallon.

Remember to treat this as labwork- rinse w/ distilled between tests, keep stuff clean- cap the test vial, don't just put your finger over it.

Hope this helps.

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im going to get a good quality ph metre.
ok.....so once I do it what do I do?? if its over or under? or do we cross that bridge when we get to it?