Circulation for a 210 gal

[ed99]

Ruth, Mark,

Thanks for your comments. Just a couple of things I wanted to clarify:

Flow- I think I have about 3800-4000 gph which is almost 20 x tank volume. Is that on the low side? I have seen different rules of thumb.

Pump- any other suggestions over the Dart for a return pump? I had seen it recommended due to heat transfer and being relatively quiet.

Calfo- I'll have to do some reading on this. The main reason I have initially not included a manifold is the head loss through it, especially if you have throttling valves on it to control the flow, but again, I'll have to read up on Calfo.

-pointed PHs to each other for random flow on my old tank and sure would work on a Dart and Stream in a 210g but have you considered CL (them again I'm biased).

Not sure what you mean here Mark. Assuming CL is closed loop I thought that my Dart return pump was the closed loop part and that the Tunze stream pump was an open loop part. When you mention considering CL could you explain that a little more?

Thanks again.

Ed