I've got the big power producing crystals, but they only work when I'm power-poor (never happens because of collector spam)
The factoriopedia says "burn it in a flare stack" but the flare stack can only connect to pipes and not fibre optic cables.
The unstable gem (the item needed for beryl) recipe chain results in an excess of pure light so it doesn't work.
Is there a way around this? I can't figure out how to make these crystal seeds with all this pure light clogging up my system