I love coco but i've always been scared to stick it in the ebb flow system.(didnt want to ruin my pump or clean the crust) I guess the hydroton would take care of blocking the coco from coming through buckets but it seems like more of a hassle to clean. My concern is recycling the hydroton which is already a bitch to clean the roots off and I couldn't imagine sifting through it with coco. Do you reuse your hydroton or just get a new bag?
The only real cons I find with coco is that the root ball gets so massive that its too time consuming to sift through it and re use it.(I imagine enzymes could break it down but sounds even more time consuming). And it grows a bit slower then hydroton/rock wool but faster then soil(indoor). Other then that loooove the coco! (half my plants are in coco/rockwool vs hydroton/rockwool) I find it more bug resistant and easier to maintain plus you can go really organic with it!!