Your the first I've heard of tbh, but all GGG seeds are fully backed up by the breeder. Whats your germ' method and how many beans from the pack have you started?? 1-7 days is about the right time frame to wait during germination (for any weed seed). Please do keep us upadated on this though and if the worst case senario does happen then know that we've got your back

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On Coco, I preffer to use
CANNA 'pro+'. It's ready to use right outta the bag and only needs charging up with a good watering. I like to use a mix of plain tap water (ph-5.9) & 2ml per 10L of 'Bio+' for the task when starting new seedlings & fresh rooted clones into coco. Here's a link with more info on the 'Bio+' >>>
http://www.aquaculture-hydroponics....nhancers-1/vitalink-bio-plus-1l.html?___SID=U. After the first few weeks when new growth is really starting to set off, start to gradually introduce nutes into the feeds lightly from there. If the coco starts to dry out at all, just lightly spray water onto the medium until the moisture is soaked back in

Also with coco it's best to get the quality stuff (don't cheap out) and remember it's
not soil!! Water till run-off and drain to waste, a lot of strains do need extra cal & mag (ph - 5.7-6.1) as diff's can/do occur, and always flush out regular to avoid any build up of nutes/"salts" in the medium.
I only started using coco last year and I gotta say it works great for me