Can I convert this to Saltwater

[ScottyD36]

So I have a 5 gallon marine land tank. I am trying to see if it is possible to convert this into a small saltwater tank for seahorses. Has anyone had any experience with this kind of tank. It was given to me as a tank last year and I was going to do freshwater shrimp and never did it. I am not new to saltwater as I have two successful tanks running. But kinda seeing if I can make this happen with this particular tank. Pick of the tank below to get idea what it is.

 

[Ocean’s Piece]

You can turn basically any glass box that is marketed as a freshwater tank into saltwater. I'm not saying that you wouldn't need to do much more modifications to it because you most likely will. But if you are wondering about the specifics (lights, filtration, etc.), you may want to do some research to see if those specifics are good enough for saltwater.

 

[Dom]

Seahorses are not a good choice for the entry-level saltwater aquarist. How much experience do you have with salt water?

 

[ScottyD36]

Seahorses are not a good choice for the entry-level saltwater aquarist. How much experience do you have with salt water?

I have a 40 gallon tank that has been up and running for few months and a 13.5 fluvial that been going for awhile. I know the requirements for sea horses and have done a lot of research. This particular tank has a weird back in it all in one section. Its a very tight fit

 

[Ocean’s Piece]

I have a 40 gallon tank that has been up and running for few months and a 13.5 fluvial that been going for awhile. I know the requirements for sea horses and have done a lot of research. This particular tank has a weird back in it all in one section. Its a very tight fit

I don’t know much about seahorse requirements but I was about to say that that tank size may not be large enough for them/a lot of them.

 

[Mono]

maybe sea-ponies?

 

[NashobaTek]

That size is fine for dwarf seahorses, which are not as easy as the regular seahorses. It's no where big enough for regular seahorses.
My suggestion is research both types of seahorses and be positive you are ready to commit to the extra time and care they need. They're not something you can just dump a little food at every day.
Best of luck with your decision.