tunze pump

[Dace]

ok i was thinking of selling my 1 year old iwalki 70 mdrlt and buying a tunze :

Master electronic 1073.160
(1073.160)

Pumping capacity: 15,700 l/h (4,142 US gal./h)
Energy consumption: 230 W
Pumping head: 5 m (196.8 in.)
Voltage / frequency: 230V/50Hz (115V/60Hz)

1073.160533.15 USD
or a :
Master electronic 1073.140
(1073.140)

Pumping capacity: 13,100 l/h (3,456 US gal./h)
Energy consumption: 220 W
Pumping head: 8.50 m (334.6 in.)
Voltage / frequency: 230V/50Hz (115V/60Hz)

1073.140553.07 USD


and would like to know how can i plumb this to my system correctly.
right now i have a 1" form sump then through uv 1" then up 1 flight using 1" pvc to my display where i tee off and run to 2 X 3/4"
returns. i think that the in and out from these two pumps are 1 1/2 inch so what can i do. should i rerun the line from basement to 1st floor display 1 1/2" and then tee off and reduce to 3/4 inch returns. i'm sure this will not work but i cannot redrill this tank with bigger bulkheads. it's a predrilled 180 AGA with two mega overflo's with 2 1" drains and 2 3/4 inch returns.
i dont think i'm turning my water over enough. how many times should i be turning my water over if my total volume is 350gals. i think my total head room is 14' thanks for your help.....
David

 

[kimoyo]

At 14ft the iwaki 70 does ~ 1260gph for 322W.

At 14ft the tunze 1073.14 does ~ 2500gph for 203W (the actually wattage is lower). But 1" piping will cut down the flow considerably (unless you have two or more 1" pipes).


I'm getting my 1073.14 tomorrow but won't have it hooked up until next week.


Here's that thread I was telling you about, http://www.reefcentral.com/forums/showthread.php?s=&threadid=733737.

 

[Dace]

At 14ft the iwaki 70 does ~ 1260gph for 322W.

At 14ft the tunze 1073.14 does ~ 2500gph for 203W (the actually wattage is lower). But 1" piping will cut down the flow considerably (unless you have two or more 1" pipes).


I'm getting my 1073.14 tomorrow but won't have it hooked up until next week.thanks paul,


Here's that thread I was telling you about, http://www.reefcentral.com/forums/showthread.php?s=&threadid=733737.

how about the big one . sorry for all the question

 

[kimoyo]

It's all good. At 14ft the 1073.16 will give off less flow than the 1073.14. Here's the flow chart from tunze, http://www.tunze.com/fileadmin/images/product_database/-info54.jpg.
But the height is in meters and the flow in meters cubed per hour.