Terrible Advice Tuesdays: If your aquarium is leaking, just pour in Radiator Stop Leak to seal the leak.
The rest of the story: If taking a substance meant for a car’s radiator system and adding to your saltwater aquarium sounds strange to you, you’re in luck. You have at least enough common sense not nuke probably everything in your tank.
6% of Radiator Stop Leak is copper. [source: product safety data sheet] Here’s what copper kills in a saltwater aquarium: invertebrates. I.e. shrimp, snails, corals, etc. And it kills them 100% of the time. Copper is a well-document and safe fish treatment, however, in high levels it can be toxic to fish as well. Your leak might (big emphasis on might) stop and your livestock will probably be dead as well.
Besides the copper toxicity issue, 94% of the product is made up of substances that the manufacturer describes as “trade secrets”. While the manufacturer claims these substances are “not considered hazardous under the Federal Hazard Communication Standard 29 CFR 1910.1200.” [source: product safety data sheet], I highly doubt the Federal Hazard Communications Standard takes into account organisms in a saltwater aquarium.
If your saltwater tank is leaking, you can try to seal it with aquarium silicone (note that other types of silicone clearly state on the label that they should not be used in aquariums). Leave the Radiator Stop Leak for the Corvette in your garage.
Thanks Luis for submitting this one.Browse the Store! Questions?