OM CL Pump ?????

bmac · #1 09/30/2007, 10:42 PM

What size pump should I use on my 65 gallon for a CL on a OM 4 way ?

bmac · #2 10/01/2007, 01:56 AM

bump

BeanAnimal · #3 10/01/2007, 06:51 AM

a Dart would be great.

nyvp · #4 10/01/2007, 08:17 AM

depends on what you want to keep. a dart on a 65 is a 54x turnover usually is a bit much

strittmatter · #5 10/01/2007, 11:47 AM

I would go with a dart and you can put a ball valve on the output and adjust to your needs. Ot a snapper if you want less flow then a dart.

kgross · #6 10/01/2007, 04:39 PM

Depend on what you want to keep as was stated, and what size of the OM you got. If you have the 2 inch inlet, with multiple 1.5 inch outlets a dart will work very well.

If you got the OM squirt with the 3/4 inlet and and outlet, hooking up a dart would be a waste of a good pump since the 3/4 valve will restrict the flow quite a bit.

Kim

chrisjet · #7 10/01/2007, 05:29 PM

thats gonna be some serious flow, i would go w/ a snapper and restrict it as needed, you should go w/ at least a 90g with that kind of flow system, although i guess it could work

kgross · #8 10/01/2007, 05:44 PM

For a good SPS system 64 times turn over is not a problem depending on how the outlets are setup. As long as the corals are not being blasted by the outlet they will be fine. I know of system that have over 100 times turn over and they are doing fine.

I know of a 200 gallon system that has 4 closed loops on it. It has a 3600 gph pump, a 7200 gph pump, a 6200 gph pump and a 4800 gph pump. That works out to be around 108 times turnover and that system is doing great.

My 180 gallon tank has a 5200 gph pump plus a 3600 gph pump and it actually seems like it could use quit a bit more flow I went with to large of outlets.

chrisjet · #9 10/01/2007, 05:49 PM

true kgross, what about his return he'll be getting some good flow from that as well.

kgross · #10 10/01/2007, 06:03 PM

Depends on what flow he has through the return. For the best system, you want the return to flow just a tiny bit more flow than the skimmer uses, so you can isolate the water so that it all flows through the skimmer and not back to the tank unskimmed. So the return pump will not add a lot of flow to the tank.

Kim

chrisjet · #11 10/02/2007, 01:11 AM

"Depends on what flow he has through the return. For the best system, you want the return to flow just a tiny bit more flow than the skimmer uses, so you can isolate the water so that it all flows through the skimmer and not back to the tank unskimmed. So the return pump will not add a lot of flow to the tank."

hmm i have never heard this, i was under the impression that the skimmer will eventually get most of the gunk out. What you are saying makes perfect sense but i havent heard much about it??? Can you elaborate please

kgross · #12 10/02/2007, 11:31 AM

The more concentrated the junk is that goes into the skimmer, the more it will be able to pull out. So if you have good surface skimming of your tank the water coming off your tank will have a much higher concentration of surfactants then the bulk water.

Now many people design there sump systems to take this concentrated water and mix it with freshly skimmed clean water, so the surfactants are diluted rather than being kept concentrated to feed to the skimmer. If you setup your skimmer so that you feed the skimmer from one section of your sump and let it drain into another section of the sump, you can keep feeding concentrated water to the skimmer and return the clean water to the tank. If you let the skimmer drain into the same section of the sump as it feeds from you are defeating the purpose of your surface skimming on the tank, because you are just mixing the surfactants back into the water and pumping them back into the main tank, rather than removing as much of them as possible.

Kim

chrisjet · #13 10/02/2007, 03:19 PM

hmm, kinda makes sense - I cant honestly say i agree 100% but thanks for the explanation

bmac · #14 10/04/2007, 03:00 PM

My return is a mag 7 on a 3/4 inch sea swirl.

bmac · #15 10/08/2007, 02:04 AM

bump

kgross · #16 10/08/2007, 02:09 AM

I still would say that a Dart would make a great closed loop pump for your setup.

Kim

bmac · #17 10/08/2007, 02:11 AM

I have the OM with the 2 inch inlet, with multiple 1.5 inch outlets. and I plan on using a mag 7 or 9 on the return with a 3/4 inch sea swirl. Skimmer is a Euroreef ES5 with sedra 3500 pump. Thanks guys for your input.

bmac · #18 10/08/2007, 02:11 AM

The dart is what I was looking at.

kgross · #19 10/08/2007, 02:12 AM

You will have a nice setup. That is the same 4 way I have on my 180 and it works great.

Kim

bmac · #20 10/08/2007, 02:15 AM

http://www.championlighting.com/prod...cat=679&page=1

bmac · #21 10/08/2007, 02:16 AM

Thanks for the input kgross.

kgross · #22 10/08/2007, 02:18 AM

That is the pump, I would just suggest purchasing it from just about anybody other than Perry. (champion lighting).

Kim