(Multishelf closet Scrog) Please, Help me get them green again

Hello Everyone,

I need a bit of help here first I'll explain my setup and then the problem I'm experiencing.

The setup

I'm growing a two shelf closet scrog 2 shelves - 4ft x 3ft x 5ft (LxDxH)

2 x 600w hps cool tubes

Biobizz Light mix soil

CO2 gas system outputting for 15 mins every hour (not completely air tight so have it turned up to 75m3)

humidifier running 24x7 keeping the humidity between 40 and 60

Heater runs at night keeping a temperature of 82* and daytime temps are 89

good air circulation in the closet.


The Nutrients

Biobizz range

Fishmix

Alg-a-mic

Bloom

Topmax

Seaweed solution

Tap water left stood for 24hrs temperature around 24*


The grow so far

Veg time - 4 weeks, dosing water with 2ml fish mix and 1ml of the others (except seaweed)

I have followed a feed / feed / water routine.

Feeding every 2-3 days when pots are light

Switched to 12/12 two weeks ago, pistils looking good


The problem

Ok so they grew very well in veg with one plant looking a bit yellow all over.

With not wanting to over-react I let them all dry out and fed with water to see how it recovered.

The one that looked yellow started to recover a few of the others seemed to be starting to go the same way.

I suspected a N deficiency so I upped the nutes to 3ml per liter as I had veged for longer than the Bio-Bizz chart.

Unfortunately no change.

I have good control over environment so I don't think it's a temp lockout, PH is questionable although its just some of the plants, the rest all look really healthy.

I'm tempted to try a fish mix folier spray 1ml / litre but two weeks into flower I'm not sure if I should.

Any advise much appreciated.

too warm

Quote:

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Originally Posted by Shovelhandle

too warm

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How much? Everything I've read says higher temps speed up metabolism and 90 is fine with Co2 enrichment.