closed loop help

[beansbro1]

i posted this in the general discussion forum but i could really use some more help. i'm redoing my 20L and upgading my pumps . here is what im planning. the ank is a 20L with a 20h sump/fuge. for my return im thinking an ocean runner 2500 (650 gph) throuhg a scwd. right now the return is a mag 7 through a scwd. the overflow will be external havent finished it yet.

ok for the closed loop im getting an om squirt. i dont know if i should use an ocean runner 2500(650 gph) or a 3500(900 gph). would that be to much flow for the tank. right now its just zoos and lps but id really like to keep some sps. here is a pic of the back of the tank. the top two holes are for the return through scwd. the bottom two are for the om squirt. the other two will go over the top to the front of the tank. please recommend a pump if either of these are to much.

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[BLKTANG]

Check out Melvs reef here on rc for closed loop setup.


Go with the 650 gph return the 900 will b to much.

 

[beansbro1]

that was my plan but should i with the 650 or the 900 for the closed loop

 

[BLKTANG]

<a href=showthread.php?s=&postid=8958271#post8958271 target=_blank>Originally posted</a> by beansbro1
that was my plan but should i with the 650 or the 900 for the closed loop

Thats up in the air,im not to familiar with the closed loop,i would imagine that it depends on how much head you are going to have between the return,& tank.

I tried a MAG 9.5 on my 29g drilled tank,& the overflow couldnt keep up.

 

[danoreef]

you drilled all of those with a dremel?
I used to have a closed loop with a mag 7 pump the flow was very good. the only bad thing was that the mag 7 ran hot and had a lot of vibration.

 

[NanoReefWanabe]

my maxijet 900 is perfect flow for my 20 H's CL...mind you there is only one return...my setup is very similar to yours..only i am using a mag 9 for sump through a SQWD...