first most of the adhesives are of super glue origin making them safe in Both environments, second depending on the size of the tank a small dose of limestone would be miniscule with good filtration and water flow , third I have used plumbers Goop, aquarium silicone, and various superglue adhesives, including expoxy for 25 years in reef keeping and have never had a problem with any so long as the product was intended to be used in or around water environments. Finally best to test in your situation and buy an aquarium safe product keeping in mine to use the proper adhesive for the job you want done.