| It sounds like you have modeled your pond after a traditional S.E. Asian design. Lots of ponders use them without problems and you have low stocking density which is good. Bottom line, I don't see any reason for you to add B.S.. Ordinary water changes should keep your kh level in a good operating range. That being said, there would still be some benefit to adding coral or shells to your chambers along with the bioballs. |