Yellowing from top down

Medicated Bonsai said:

Maybe over feeding? Have you checked the run off levels?

EDIT :: sorry i'm high, you stated the level in the post -_-.

Thats my only guess tho, hopefully someone else will be along.

Click to expand...

hubba said:

Working with a G cake strain I got from a dispensary so I can't verify their genetics. Growing in GH cocotek, currently using the General Organics go box bundle watering to runoff once per day. Pretty much following the instructions on the box barring a little extra calmag.

In an approximate 2 gallon container that comes out to 4tsp bio grow, 4tsp calmag, 4tsp bio root, 2tsp bio weed and 4tsp bio marine. After pH adjusting to around 6ph it's coming out to about 1300ec. Yellowing was more prominent on the smallest clone but is slowly showing up in the bigger ones as well.

Any input is greatly appreciated!

View attachment 4210622 View attachment 4210623 View attachment 4210622 View attachment 4210623

Click to expand...

Dynamo626 said:

First organics arnt the best to use in a coco grow.

You cant go by tds with organic nutes.


I am willing to bet you are using city water from the tap. The chlorine kills the microbes which the plants need to break down organic nutes

Click to expand...

Dynamo626 said:

Also just noticed to say 1300ec. You probably mean 1300 ppm or 1.3 ec. 1300Ec is like 650000ppm

Click to expand...

Dynamo626 said:

Lastly your going through a TON of ph up. One of the best things abought organic nutes is they self buffer in soil and the ph testing or adjusting is nessesary. Coco is hydro and must be phed.

Click to expand...

hubba said:

I am using about 1tsp per gallon to bring it to near 6PH. Is this a bad thing?

Click to expand...

Dynamo626 said:

It isnt bad just expensive. Am i wrong about the tap water? I managed a hydro store for 3 years and 90% of the time a customer was having deficiency problems with General or Roots Organics i found out they are using city tap water. As soon as they changed that or started using Dechlorinater the problem fixed itself.

Click to expand...

hubba said:

Yes i am using tap. Not sure why I forgot to reply to that. So, it sounds like the General Organics depends on microbes to break down the nutes for some of the micronutrients to be available but the chlorine in the tap is killing them off. However the general hydro stuff should have the micronutrients in a ready-to-absorb state so I should be fine using tap with those. Am I getting this correctly?

Click to expand...

Blitz35 said:

The amount of chlorine in most tap water will not kill off any microbes in soil!

Click to expand...

hubba said:

Figured I'd post an update since most threads go unfinished. Since switching to general hydro nutes things seem to be improving. Not sure the exact reason I was experiencing a iron deficiency using general organics but I was definitely doing something wrong.

Click to expand...