COCO COIR Fox Farm Trio - When to switch to full strength (coco)

[sbrklinck]

Most everything I have read says to start off using Fox Farm Trio at half strenth, and then eventually switch to full strength. Is there any general guideline on when to swtich, or do you just base this on how your plants are going?

For context, I have just straightened out an overwatering issue (first time growing in coco) and my plants are looking paler than their cousins in soil, but I am reluctant to boost the FF strength and have another screw-up. :-/

 

[MiguelEnfermo]

Hey there sbrklinck, first off, coco is hard to over water. Do you have perlite in it as well? That helps drainage a lot. Also, what kind of pots are you using and are you letting it drain well? Secondly, make sure pH is between 5.5 and 6.5 and add full nutes if it is looking pale. Some pics REALLY help with getting to the issue at hand. Look on the GWE website and search for Fox Farm and see all of the articles related to this.

 

[sbrklinck]

MiguelEnfermo Thanks for the reply! I'm pretty sure that it was an overwattering issue, as I posted about it here and that was the general consensus. Regarding your questions I am using a 70:30 coco-pearlite mix, 3-gallon grow bags, and grooved drainage trays so that the pots are not sitting in runoff water.

Water/nutes in were initially between 5.5 and 6.5 and out appeared to be 6.0. However, I just got a pH meter and was finally able to accurately measure out and it was 7.0 so the latest in has been 5.5 to try and get it down.

Latest pics attached. The plants are 4 weeks old - the larger one is a GG4 auto and the smaller one is a Haze XL auto. The Haze has been a problem child; only 1 out of 4 seeds germinated, it has been a slowpoke, and is now wilting again and turning yellow. :-/

 

[MiguelEnfermo]

Looks like you got out ahead of it! Awesome!