getting a new pump, talk me out of it.

prow · 06-21-2007, 01:44 PM

hey everyone. its time for me to hook my chiller up. its a 1/4hp arctica chiller. i am shooting for about 700-900gph running throught the chiller. this will be on a closed loop within the sump. it will have about 8feet of travel tubing to and fro the chiller. no head pressure just whatever friction pressure the tubing adds. right now thinking of getting the iwaki MD40RLT(its the one for pressure applications) not even sure if i need a pressure application one or not, its the same price.

what i want is a good external pump that is quiet, like everyone else. i think iwaki are the highest priced ones so price is not a issue. any suggestions?

i do have some sedra pumps still new in the box, a 500gph(kinda keeping it as a back up for my skimmer). new 700gph and 1200gph sedra's just kicking in the closet the past couple years. might be able to use them but not sure how they would do as external pumps.

even though price is not the issue, i am hoping someone can point me to a nice quiet pump for about half the price, anyone??? ok maybe price is a little issue but not the main one.

Dentoid · 06-21-2007, 01:55 PM

I'm tagging along. I'm trying to set up my Peltech Geotronic chiller/heater and need to know the same thing as far as a pump is concerned.

prow · 06-21-2007, 02:01 PM

cool, welcome aboard

. lets hope this baby doesnt sink before we get our pumps

prow · 06-22-2007, 07:45 AM

hummm, nothing huh. fine than

. so can anyone tell me if i should get the MD40RLT or the MD30RLXT. because its going through the chiller i am thinking i need the MD40RLT for pressure. any thoughts, anything? no other quiet running external pumps in the 700-900gph ranges?

Woodstock · 06-22-2007, 07:52 AM

I really don't know my external pumps well.

I have read that a pump that has no head pressure can 'overspin' and cavitate, creating bubbles. Plan on putting a valve on the output side of the pump so you can dial the flow down if needed.

prow · 06-22-2007, 08:52 AM

thanks woodstock, good advice and great info

.
i could save about $50 with that method. but dont want to restrict it, for some reason i dont like restricting anything. its just me

. even my tunze is set at full on one setting(no need for that either, have plenty of flow, i just can not get over restricting things)

.
so with that i am leaning towards the RLT models. i do not plan on buying it till next weekend. so i have some time to look into other possible pumps, hint hint

.

prow · 06-24-2007, 02:09 PM

ok this is mainly for dentoid. just an FYI.

after looking around i decided to go with the pan world 100PX. will be buying this week, likely tomorrow. well not, i talked to greg at reefgeek yesterday and he can get these but has to order them. so when ever he gets them in after i place the order. somethime this week. i will let you know how it does if you want and are still looking.

06-21-2007, 01:44 PM	#1 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	getting a new pump, talk me out of it. hey everyone. its time for me to hook my chiller up. its a 1/4hp arctica chiller. i am shooting for about 700-900gph running throught the chiller. this will be on a closed loop within the sump. it will have about 8feet of travel tubing to and fro the chiller. no head pressure just whatever friction pressure the tubing adds. right now thinking of getting the iwaki MD40RLT(its the one for pressure applications) not even sure if i need a pressure application one or not, its the same price. what i want is a good external pump that is quiet, like everyone else. i think iwaki are the highest priced ones so price is not a issue. any suggestions? i do have some sedra pumps still new in the box, a 500gph(kinda keeping it as a back up for my skimmer). new 700gph and 1200gph sedra's just kicking in the closet the past couple years. might be able to use them but not sure how they would do as external pumps. even though price is not the issue, i am hoping someone can point me to a nice quiet pump for about half the price, anyone??? ok maybe price is a little issue but not the main one. __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html

06-21-2007, 02:01 PM	#3 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	Re: getting a new pump, talk me out of it. cool, welcome aboard . lets hope this baby doesnt sink before we get our pumps __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html

06-22-2007, 07:45 AM	#4 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	Re: getting a new pump, talk me out of it. hummm, nothing huh. fine than . so can anyone tell me if i should get the MD40RLT or the MD30RLXT. because its going through the chiller i am thinking i need the MD40RLT for pressure. any thoughts, anything? no other quiet running external pumps in the 700-900gph ranges? __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html

06-22-2007, 07:52 AM	#5 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 25,502 View Gallery Karma Komment Add yours!	Re: getting a new pump, talk me out of it. I really don't know my external pumps well. I have read that a pump that has no head pressure can 'overspin' and cavitate, creating bubbles. Plan on putting a valve on the output side of the pump so you can dial the flow down if needed. __________________ ~Doni Marie~ *GOT ICH???* *My Victorious Battle with ICH* 120 Reef Chronicle ~ *Breeding Picasso Clownfish~* *Massive 300 gal growout~* *My Anemone & Picasso Tank ~* *Picasso & Snowcasso for sale~* "Energy and persistance conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________

06-22-2007, 08:52 AM	#6 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	Re: getting a new pump, talk me out of it. thanks woodstock, good advice and great info. i could save about $50 with that method. but dont want to restrict it, for some reason i dont like restricting anything. its just me. even my tunze is set at full on one setting(no need for that either, have plenty of flow, i just can not get over restricting things). so with that i am leaning towards the RLT models. i do not plan on buying it till next weekend. so i have some time to look into other possible pumps, hint hint . __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html

06-24-2007, 02:09 PM	#7 (permalink)
prow Tridacna maxima Join Date: May 2005 Location: Redondo Beach, CA Posts: 4,728 View Gallery Karma Komment Add yours!	Re: getting a new pump, talk me out of it. ok this is mainly for dentoid. just an FYI. after looking around i decided to go with the pan world 100PX. will be buying this week, likely tomorrow. well not, i talked to greg at reefgeek yesterday and he can get these but has to order them. so when ever he gets them in after i place the order. somethime this week. i will let you know how it does if you want and are still looking. __________________ "He who sees things grow from their beginnings shall have the finest view of them" ........Aristotle........ "The only difference between me and a madman is that I'm not mad." - Salvador Dali my chronicle........ http://www.reefsanctuary.com/forums/...al-system.html my clamicle..........http://www.reefsanctuary.com/forums/...my-tank-d.html

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