i am attemping to make my own countertop. i am still quite unsure on the correct concrete mix. has anyone good "recipe" for concrete mixture? i saw quikrete countertop mix is designed for countertop but people seem to not like it. also read that quikrete 5000 with addition of water reducer and microfibers is a good mixture, but no exact measurements were stated. also not sure where to get water reducer. i am looking for recipe for mixture that uses ingredients that are readily available in home depot or lowes.