New tank plumbed to old tank

[jeepboy]

I am getting a 125g tank and I wanted to verify that plumbing it to my current 75g reef tank would not cause any problems. Would increasing the system volume by 125g cause any water parameter problems?

 

[greatfullreefer]

Make sure the new tank cycles completely BEFORE joining it with your old system. But please wait for more comments from peeps that have done this.

 

[jeepboy]

Would it really need to cycle? If I keep it void of any life, just saltwater, I thought the current 75g system would eliminate tank cycling.

 

[greatfullreefer]

Originally posted by Jeepboy
Would it really need to cycle? If I keep it void of any life, just saltwater, .
What is the purpose for joining the 2 tanks?

 

[jeepboy]

I want both tanks on a central sump and refuge. That way I only have one system to top off. Next year I plan to get a 300g tank at which point the contents of the 125 and 75 will be consolidated. I also thought having both tanks together would make for a system with a large water volume of ~275gal (includes refuge and sump). I also have a 55 gal tank that I may also plumb into this system.