Yes I use GH nutes and I use Royal Gold Tupur coco. I’ve been reading this thread and it was the first time I’ve heard someone talk about cleaning or buffering their coco before the grow. I’ve never done it so I don’t know what I’m missing I guess but since all my grows have been healthy and fruitful, I’m a little wary of changing up now. Im thinking that must be only be necessary if you start with a brick? As for the nutes, on my first visit to the hydro shop I told the guy I didn’t want to be guessing at ALL when it came to when to water, how much to water, when and how much to feed. He suggested coco since I have to fertigate every day and the GH nutes because they come with a detailed week by week feeding schedule. I use a 9 part nute system and I can easily see why someone would say it’s “more work” than just watering soil with an occasional top dress, but for ME since it only takes 10 minutes a week to mix the nutes, there is “more work” in wondering if I should water today. Hope that makes sense. I assumed when I started that I would venture out and try new nutes because I heard that GH is pretty generic but two years later I’m still happy with the process and the results.
Edit…just remembered that after about a year of using my coco I saw on cocoforcannabis that the guy was using the same Royal Gold Tupur coco as I was and he said:
I am currently growing in Royal Gold Coco. I met their senior product specialist at a conference and was impressed with his knowledge and their processes. He sent me a sample which I am using now and very happy with. This is one of the only coco grows in which I have completely avoided “CalMag problems”. The mix of fiber sizes also promotes better water distribution. Unfortunately, it is currently available only in the US. If you want to grow in this coco, I recommend looking for it locally, because shipping makes online prices expensive. If you are forced to order online, then there are more cost-effective options which you may want to consider.