To close loop or not to close loop...that is the question

[Ping]

I did not know that about Tunzes. Can the same be said about the Seio's?

[Ram_Puppy]

I have to say my oceansmotions experience was awesome, and any problems I had were quickly and PROMPTLY resolved w/ excellent customer service, even though the lady that runs the joint (I forget their names but the guy makes the stuff and she keeps the business going) had cancer at the time.

[cobraden]

I would be more concered about heat transfer from a few PH's if the water volume wasn't so large. I have had that be a problem with a smaller tank in the past.