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Fish Friendly

Please note that only aggregates indicated as fish-friendly should be used for aquatic purposes. We have put a symbol to indicate this for all the products here.


We recommend as a precaution that all Stonewarehouse products should be thoroughly washed before being used in an aquatic environment - mainly to remove any dust from the packing and delivery processes.


Fish Unfriendly

Those aggregates indicated as Not Fish-Friendly are likely to alter the water alkalinity and may seriously harm aquatic life.