Start of the light cycle 7 hours approx into the light cycle
Not too shabby, let em' run. Bigger pots are usually bigger plants but longer running. If you are in coco you need to fertigate to runoff everytime. 20% is a good guide. If 1 litre put in then you should look for at least 200ml of runoff. If you have not been doing this you need to get those pots into a big enough bin and run a load of nute mix through.
I check EC/ppm going in of course but also the runoff ppm. I try and keep runoff ppm no more than 300 higher than input. If I am fertigating with 500ppm solution then the runoff needs to stay below 800ppm. If it is higher then I either need to add more volume or reduce nute strength.
I would run a couple litres through and check that runoff EC/ppm value.
What is your current feed strength and pH?
Ph is at 6.0 but not sure on ec atm. I'm now in the process of modifying my run off catchment so I can check it easier. Will admit the catchment has been dry though but with a dripper is a little bit trickier to get right so I'm spending abit more time working on that. Hopefully can get it right very soon
Morning couple hours to goStart of the light cycle 7 hours approx into the light cycle View attachment 1606477
Hello you are not putting enough water through them coco needs to stay very moist not dry as it gets hydrophobic and water cant spread through the medium creating dry spots and salt build up you need at least 25% run of each watering not just a little dribble you have to treat coco like hydro not soil other wise you are going to have loads of problems as coco is not forgiving like soil
These are in 1.75 gallon pots they are fed 2 x a day with 20% to 25% run off
This little one has 1.25LTR a day

This girl has 3.3LTR a day

This one has 3.3LTR aday

This way there is no dry spots and all salts are flushed out each day
I've upped the amount