In coco I don't know exact ph but I use the drops and it's around 6.0 I did order the pH reader today tho @gravekat303
Ok, before you add any nutrients, please check your environment. 1. Is is hot or cold? Is it damp or dry? what lamps are you running? Have you got enough air exchange?
Before you do anything with a bottle, plese check your environmental conditions. make sure there isnt a stress vector coming from the location. No boittle can help you if your temps are running to hot, or if you room is too dry, or you dont have enough light, or even too much.
if you let the pots dry too much, too often, if they are kept wet too long too often...etc.
So looking at your plants. You are losing Iron....and there could be a number of reasons why,
looks like a pH climb bro, but know pH climb is a result, not a cause.
Probably losing Sulfur and Iron, certainly Iron is one of the first elements to go once pH climbs. Whats the run off reading. This isnt an exact science, but if you are out of pH, eg above 6.5, you will be losing everything.
What do i do in coco?
I water in from 5.5-6.2 in coco. I closely monitor my media pH with a soil / media pH probe, a proper one, not a $10.00 job from ebay or other. I use Bluelabs fyi.
One thing to know about Coco, it has a slight negative charge, so it tends to hold on to Cations (positive ions) like calcium, preventing these getting to the plant. As these build up, they are binding with elements like Phosphates, converting them in to CalPhos for example
Organic acids like humates will certainly help you mate since they both chelate your micros like Iron, this prevents them being in a state to bind with other elements, but since you are in coco, technically hydroponics, you might prefer to use a Fulvic acid and not a Humic acid. why? Well humic acids is typically served to us as Potassium Humate. What is potassium, it is a cation. So adding more cations to an already loaded media will increase the problems you have. You need a solvent mate. Water is a solvent of course, eg it dilutes salts, but because you likely have binding occurring, you need to separate these elements again. Adding an organic acid like Fulvic will help create the conditions that favor the acidity of your media. You might try ading a
Yucca supplement to your feeds. Again this will help the acidity of your media, it will also help your nutrients distribute more evenly.
Adding things like Mycorrhiza fungi will also help. Fungi secrete organic acids which help to break Phosphates from Calcium for example. It is fungus that allows our plants, and those in the wild, to maintain access to phosphates which like acids to be mobilized.
Lots of coco is pre buffered, this happens by companies rolling the coco fibres in calcium nitrate usually.Is yours?
Sometimes adding other cations on top of this, seems to cause a pH climb esp in bloom as the plant pulls harder on P and N.
Guides are not science, they are a point from which to base a decision. All plants like people are individuals. It could be you have over fed, it could be you have under fed. Diagnosing peoples plants on line is a risky game mate, but check your environment, then if this is good, check your feeds, watering frequency, pH etc. Do not grow in Coco if you dont have tools to maintain a pH.
Hope if gets fixed.
Eco
