COCO COIR PH DEATH

I would have to agree with Thraxa. I to grow in coco and recently bought a digital ph tester and it makes it so much easier to test the ph of my nutes.I will try to keep my ph of the water at 5.5 to 6.0 and during veg will use 5ml per gal of Cal-Mag during veg and cut it down to 2.5ml during flower. Don't overthink it and enjoy the ride. Best of luck.

Listen to thraxa

I can also see you are feeding at 1.6 EC ? That's too much at this stage . Dial it back down to 1.0/1.2 . That's probably why your run off is going up.

Your overthinking it. Don't worry about run off PH when they're in those small pots . Just keep feeding at 5.8 pH . When you transplant into bigger pots that's when the run off can help you. I feed at 5.8 in veg and like my run off to be between 6.0 and 6.4 pH. Red stems after the seedling stage is usually a lack of calmag . Start giving a small dose of calmag with your base nutes soon . This helps with nutrient uptake. Calmag is a must in Coco . Especially if you are in a soft water area. Your plants look healthy.

Flush with ph balanced water would be the best course of action. though this plant is not that large so you cant really do that without overwatering her. So its either let her go through a few days until its dry again and then adjust or you can bite the bullet giver her extra water to sort it out but keep in mind this may slow her down. Im not too familiar with growing in coco i know people say its hydroponics but if thats so why are there seperate feeds for hydro and coco I dont know. I know alot about ph though as I am a dwc grower fully hydroponic soil or coco is way too messy and pretty bait if you live in an apartment or somewhere without a garden people see you bringing in soil are going to know instantly what your upto lol If you wanna do Hydro I suggest going the full mile and doing a NFT, DWC, or flood and drain. these systems are what I would call more hydroponic as they dont need a medium :) though I hope this helps and wishing you all the best to sort it. ps stems that discolour or go a bright colour is usually down to light exposure its the plants natural defense against intese light you will notice this when you look in a tent and see its only the stems in the light that turn this colour the others wont :) it could also be genetic though or a mutation of that certain seed or pheno you never know :)