So, what coco are you using currently? Or have you switched to something else?
I’d consider something I don’t have to wash and buffer. Have you already been through canna coco (I think that’s what you were using for a while, bagged canna coco, right?)? I was considering a brick of canna coco - It’s the same stuff only compressed. But the compressing might make more fine dust, which would have to (ideally) be rinsed out/away - another procedure I do not want to do.
If no brick or bagged coco comes “ready to use” (no need to rinse dust, salt, or have to buffer) I might keep it moving passed coco. (I do have a pack of floraflex compressed coco things. The ones that come in the grow bags, with a little divet for a jiffy pellet. Supposedly you just use these as is. Hydrate them with your fertilizer solution and go).