silicone use

[michika]

So if I let it cure until its no longer tacky is it then okay to put water over it to leak test, or should I be waiting the full 24 hours?

How would you repair a leak in an existing and running tank if your need to let silicone cure for the full 24hours?

Are there other alternatives to silicone?

So the compound X (the one you want to call Ammonia) that leaks into your system if water comes into contact with it to early, would that be taken out with basic carbon running? If that is the case would it then be suggested to immediatly run carbon when the tank is first up and running?