I have only used rockwool for seedling propagation and wanted to know what is the appropriate size cube to use for growing to around 3 feet. Is this even advisable with Rockwool? How about using the slab?

Thanks
sdubya Reviewed by sdubya on . Quick Rockwool Question I have only used rockwool for seedling propagation and wanted to know what is the appropriate size cube to use for growing to around 3 feet. Is this even advisable with Rockwool? How about using the slab? Thanks Rating: 5