Coco

Is it a compressed brick you need to expand or fluffy stuff in a bag? Compressed stuff, if you cheaped out, is really low quality usually and has sea salt in it due to the lack of rinsing during processing. It's never a good idea to try to skimp out on your coco purchases. But the already expanded stuff with a mixture of perlite in it. It is pre-washed and buffered with calmag and pH adjusted. Canna sells a compressed brick but i have not heard or tried it so i can't speak to it. But they are a reputable brand so they would likely be trust worthy to invest in, but a no name brick from who knows where off amazon....no way i'd use that.