coquina rock

[bigginapk]

Does anyone know if coquina rock is O.K. for use as a base rock? Does it have any down falls or negatives to useing it or is there any positives to using it? I read somewhere that it has calcium aragonite in it and that should be a good thing. Any and all info would be appreciated !
Thanks Chad

 

[ahullsb]

bump

 

[bigginapk]

bump

 

[sunkool]

No, it contains high phosphates.
I have about 75lbs of it in the back yard that I bought to use for the tank but it is no good.