setting up non drilled saltwater tank

[Bret11]

Hey, I have a 125 gallon tank that I used to use for freshwater with a canister filter I want to convert the tank to saltwater, I have a 75 gallon saltwater tank that is drilled and running a wet dry filter, could I run a wet dry with the 125 if it’s not drilled, if so how would I plumb it?

 

[tlindsey]

Hey, I have a 125 gallon tank that I used to use for freshwater with a canister filter I want to convert the tank to saltwater, I have a 75 gallon saltwater tank that is drilled and running a wet dry filter, could I run a wet dry with the 125 if it’s not drilled, if so how would I plumb it?

duanes
BIG-G
twentyleagues

 

[Backfromthedead]

Afaik, without drilling the tank, youd be left with two options. One is to use a HOB overflow box, which i don't recommend. The other is to figure out a way to mount the wet/dry overhead, use a pump in the tank to supply it, and a gravity drain for the return from it.

 

[BIG-G]

Agree with Backfromthedead .
You can use a Hang on overflow box or one of the DIY PVC overflow designs.

I’ve used both they can be finicky to get adjusted but once they are dialed in they work.
Still prefer drilled with bulkheads but you can get by with the ones mentioned.

 

[BIG-G]

Bret11 I would just do a quick Google and you will find many DIY PVC overflow designs and Overflow boxes.
There are several videos on YouTube that can help you understand how they work and how to build one.