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I would use Teflon tape instead. That way nothing should get into the water. If you have never used it before, hold the threaded pipe in your left hand and wrap the tape over the top of the threads and around several layers. By doing it this direction, the tape will stay in place when you screw it into the fitting.
Teflon tape only works on threaded fittings. using pipe dope is absolutely fine to use on fish tanks, just be sure to let the dope cure perhaps as long as three days. also take care to use the correct type of dope, their are many. if in doubt test the fittings in salt water before using.
If you are just pressure fitting the pieces together, glue them. Pipe dope may seal the connection for a while, but it will eventually leak.
What else can I help you with?
Why saltwater fish can live in saltwater?
because saltwater fish must be live in saltwater
Is the guppy fish a saltwater or a freshwater fish?
saltwater
Are spotted eagle rays freshwater fish or saltwater fish?
They are Saltwater fish.
Are saltwater fish hyperosmotic or hypoosmotic?
Saltwater fish are hypoosmotic.
Where saltwater fish live?
Saltwater fish live in the saltwater seas and oceans around the world.
How much freshwater can a saltwater fish take?
A saltwater fish tank can be half freshwater and all of the saltwater fish will live but not for very long.
Why are some fish saltwater fish and others freshwater fish?
Because saltwater fish can only breathe in saltwater (as in the ocean) and freshwater fish can only breathe in freshwater (as in tap water.)
Is it safe to add live salt water sand to a establish salt water aquarium?
Well, there are 2 types of fish, saltwater fish, and freshwater fish. Only put in saltwater if you own a saltwater fish. Note: Saltwater fish could live safely in freshwater, but freshwater fish will suffocate in saltwater.
Are lionfish freshwater or saltwater fish?
saltwater
Are drum fish saltwater or freshwater fish?
There are freshwater drum, and saltwater drum species.
How does saltwater effect saltwater fish?
saltwater fish need to breath in saltwater and not fresh water. just like we need to breath in oxygen and not carbon dioxide.
What are saltwater fish?
Saltwater fish as fish that live in water with a salinity of higher degree than brackish water, such as fish from the ocean. Clownfish (Nemo), Tangs (Dory), Tuna (Charlie) are commonly known saltwater fish.
