Keep your substrate don't waste your time adding crushed coral to the bottom of your tank
Get a mesh bag fill it with the coral and add it to you filter. A nice thin layer could shoot!! your pH and is not a very good Idea.
Most that have this in their tanks and know the effects add it where they can quickly, intelligently and effectively remove it if they find they've made an error...
Most that have this in their tanks and know the effects add it where they can quickly, intelligently and effectively remove it if they find they've made an error...
Heres another great example of....read the entire post before commenting....