Brown new growth

[Gorgothl]

So I'm having trouble figuring out why my plants new growth is browning. Strain is Blueberry Spacecake, lights are LED 1200w with cobs. Medium is in coco/peat with vermiculite and perlite amended with worm castings. Ph is 6.7.

 

[Chris Scorpio]

Nutes??

pH is way high, Should be 5.6-6

How often u watering? Is it with nutes each water

 

[Gorgothl]

Yeah I just mixed up 16 gallons of water with a full lemons worth of juice to drop the ph, nutes are 20/20/20. I feed, water, water, rinse and repeat.

 

[Chris Scorpio]

Coco has no nutrient retention

Water daily with 1/4 strength nutes till runnoff

2+x a day in Flower

 

[Gorgothl]

Even when all the nutes are bound in nitrate form? Except my CALiMAGic it is liquid, also my tap water comes out at pH 8, hence the lemon juice, any efficent way to get distilled water without purchasing it or having to boil pot after pot of water?

 

[Gorgothl]

Also what can I use for iron replacement? Since the coco binds to the iron.

 

[Chris Scorpio]

Bound?

It's not soil.... Coco dosent retain nutes to feed off of like soil, and the daily water is needed four airation of the roots

 

[Gorgothl]

Its coco and peat

 

[Gorgothl]

Also advanced nutrients is saying that it needs more Fe, Ca, Mg.

 

[Chris Scorpio]

The peat didn't click in my mind I guess

For sure more challenging of a medium then...

 

[Gorgothl]

I'm thinking next round I'm switching to DWC

 

[Chris Scorpio]

I hated Coco...just didn't work for me

Hempy and DWC are my choices...but gunna try some soil options soon

 

[Gorgothl]

What is hempy? Is that different type of hydro?

 

[Chris Scorpio]

Perlite only...some had a bit of vermeculite

Passive hydro...works great

Bucket, 1/2" hole about 3" from bottom
Water/nutes about every other or 3rd day...easy peasy

 

[Gorgothl]

Ah okay, I think I'll stick with DWC when it comes down to starting it. Also these are my veg nutes.

 

[Chris Scorpio]

I see GH calimagic...what's the other one

 

[Gorgothl]

Plant prod ultimate 20/20/20

 

[Chris Scorpio]

No clue...but wrong ratios for sure..

Sounds like vegetables nutes

 

[Gorgothl]

Coco has no nutrient retention

Water daily with 1/4 strength nutes till runnoff

2+x a day in Flower

I assume in veg just nutes once per day?

Also my nutes have been mixed 6.25 tablespoons of plant prod into 22.5 liters, and the calimagic is think was 6ml to 22.5 liters

 

[Gorgothl]

I normally end up with a little nitrogen excess that I let my plants eat off in flower.