As iv been syphoning my sand bed my substrate level is lower,can I add new coral sand into the aquarium now that it's established or will it cause spikes?
If you are going to add any new substrate you would be better off using live sand as apposed to dry.It would cause a spike and adding live may still cause a small one
+1
Add it slowly. I added 2 cups a day to my 180g until I had added the whole bag with no ill effects.
{QUOTE=StevenBell;1535096]If you are going to add any new substrate you would be better off using live sand as apposed to dry.It would cause a spike and adding live may still cause a small one[/QUOTE]