understandable. i suspect you may one day just expect finer products for your substrates for your frogs as well. after using a fine coco substrate you may get spoiled. if your frog enclosures are full-on grow areas (viv, palu, etc.) you may want to take a look at some abg mixes as well. just throwing that out there in case you haven't considered or heard of it.
in general... if you've got a good hydro store nearby, you should definitely check it out if you're growing anything in confined glass/acrylic boxes. lots of little "knick knacks and doo dads" to play with. likely to save money and get better products as well.
i think i'm "that freebie guy" at my local hydro shop. every time i walk in it seems whatever i am looking for is so cheap they wind up just giving it to me. hydroton in small amounts for a drainage layer, spray nozzles, one or two bricks of coco fiber, small bag of worm castings, a few small baskets for plants, etc.. i love my local shop. hope you have the same experience.