Tupor needs less cal mag the straight coco be careful with ur doses.. I'd wait to see if it's asks for it before adding any... as far as rinse I would because you could be washing out wherever they put in it.. 1000 is high I assume but I never tested coco runoff. I use bcuzz right out the bag...
When I use it run off comes out at 1200 ppm when going in at 750 ppm. I put 1 gal of regular strength feed through each 1 gal of tupur , dtw and it brings it down to starting ppms, then I plant . I'd flush personally if you're planting small plants , 1000+ is strong for a small clone. If 7ts an established plant it may not be as much of an issue