External pump question on selection

S

Seth W

New member
I recentily had my tank setup for a closed loop system and was planning on buying a 3500GPH locally through the same store for my 75g reef system. unfortunally after being quoted $260 to buy one from them I found the same one through dr foster and smiths for $190, this was after being charged $180 to setup my tank for a closed loop setup when in all actuality I could of done it for about $60-$75 in parts....needless to say I wont be buying from them ever again.

Anyways in looking at the pump choices their is a 3600GPH rated one for $190 which uses 793 watts vs a 4860GPH one for $20 more and it uses 1058 watts. Naturally I'd think that for $20 more why not go all out and get the better one, my only concern is would this be over kill or could I simpily choke down the feed line if the flow rate was too much?

The water is going through 4 1" outlets in the tank and is fed into a single 1 1/2" inlet to where the pump would go.
 
That's a lot of flow on a 75. If you're going bb and a sps tank it might work but is still overkill IMO. If you have to throttle back the pump why pay for the eletricity to pump against a closed valve? BTW, with 4 inputs I would look at an oceansmotions 4-way. Really like mine.
 
Looks to me like a sequence hammerhead would work great for your tank. What brand pumps were you looking at before?
 
superedge88, excellent suggestion

Seth W,

if closed loop is what you want a Dart can do 3600gph while only using 160w

sequence pumps

but for reference I use tunze streams and they are just drop-n-plug, with them i'm doing 3700gph with only 30w, and can double that flow with $120 and at 90w

try to stay under or close to 200w, good luck

sam
 
the pumps I was looking at are the pentair aquatica sea horse pumps. I dont know how they rate their pumps in tearms of watts per hour or whats per something but the only number figure I got was a 793 for the 1/2 HP model and a 1058 for the 3/4 HP pump which flows 4860GPH.

Looking at the link the dart model does look like a good choice. Preaty much my goal is to do things right the first time and not have to pugrade later on down the road.

My plan is to run the 75 as a main and use a 55g as a refugeium along with a 30ish homemade sump/mangrove refuge as well.

I havent ordered anything from marine depot but I'm sure they are just as reputiable as foster and smiths. I'll look around on their site for the ocean motion thing. I was looking at the scwd things but it looks like it doesnt work with those flow rates. it sounds though that of couse the way to go would be to have some sort of ocelating current.
 
Caution high wattage

Caution high wattage

First a disclaimer, I am the owner of Sequence ReeFlo Pumps. Now that you have made your system "pump friendly" by installing a closed loop system, its time to reap the benefits. If you really need 3500 gph for a 75, well then the dart will be maxed out (max flow 3600 gph at zero feet of head pressure...however, the barracuda should work just fine it will draw about 225 watts and it will be quieter ( max flow 4300gph)...why? because its a low speed pump (1725 rpm) with a premium efficient Baldor motor...many of the pumps you discussed are high speed (3450rpm) and have no-name motors...our are physiclly larger because they need a bigger impeller to do the same job as a faster spinner....however, our "lower idle" is far more efficient (did I mention quieter)...and oh BTW it comes with a 3 year bumper to bumper warranty.
You can go with a hammerhead which will give you (on average) about 1/3 more flow and about 120 more watts but, hey, with the wattage that you were looking at you could get two hammerheads!
 
Jackpot!! I'm looking at the Sequence - maybe the 3200

So this is where I'm at with pumps - I'm about pumped out

Cost...Pump......................Watts...gph @11'
$310...Sequence 3200.....213w....2200gph
$129...Mak4.....................140w....800gph

and:
$310...Wahoo..................265w....1500gph
$260...Barracuda.............325w....2500gph
$225...Gen-x PCX100......360w....1590gph MAX
$250...Panworld 200.......290w....1750gph MAX

I've been going back & forth on what to use

180g show, 124g sump - but will be running w/about 80g
125g frag/fuge
plus another 75g frag/fuge

Still debating....

I have a Tunze in the tank & will be adding a 2nd one
So flow in the tank isn't an issue
But I'd like to provide flow to the 125g & 75g - but this could be achieved thru drains from one tank to the next
 
Caution high wattage

Caution high wattage

First a disclaimer, I am the owner of Sequence ReeFlo Pumps. Now that you have made your system "pump friendly" by installing a closed loop system, its time to reap the benefits. If you really need 3500 gph for a 75, well then the dart will be maxed out (max flow 3600 gph at zero feet of head pressure...however, the barracuda should work just fine it will draw about 225 watts and it will be quieter ( max flow 4300gph)...why? because its a low speed pump (1725 rpm) with a premium efficient Baldor motor...many of the pumps you discussed are high speed (3450rpm) and have no-name motors...our are physiclly larger because they need a bigger impeller to do the same job as a faster spinner....however, our "lower idle" is far more efficient (did I mention quieter)...and oh BTW it comes with a 3 year bumper to bumper warranty.
You can go with a hammerhead which will give you (on average) about 1/3 more flow and about 120 more watts but, hey, with the wattage that you were looking at you could get two hammerheads!
 
i have the sea horse 3/4 hp on my cuurent system, and it is so noisy and soooooooooooo power hungry

i am switching out to a different tank just to get away from that pump

For reference a friend of mine works for OGE our electric service here, and he brought over a wattmeter to plug into that pump

it runs 9.1 amps, 1845 watts 24/7/365, and runs me about 80-90 bucks a month on electric...stay away from the sea horse...

I am going to run a dart, and two bluelines on the next tank being set up now, their total wattage draw is less than 500 watts

thats killer in comparision
 
just remember in a closed loop the head pressure is zero, maybe 1-2 ft when concidering friction loss of pipes and 90s. i just ordered a dart and a 4way from paul at oceansmotions and cant wait til it gets here. that pump @3600 gph will give me 35x turnoverin my 95g, more than enuf flow, i wil prob have to throttle it back and pipe in a bypass.
 
yeah I'm preaty set on the dart pump for the setup when I have the extra cash. right now though I'm working on swapping my engine from one car to another (my other money pit) plus adding my supercharger and clutch.
 
infrared69 does make a good point about closed loops having little to no head pressure, though I would like to clarify a little about exactly what types of closed loops have head pressure and which ones don't. The types of closed loops that do have some head pressure are the manifold types where there is a manifold that sits on top of the tank, since you are pumping water above the water level in the tank then you are going to have height induced head pressure. Closed loops that return the water below the water level of the tank do not have any height induced head pressure. Seth, what type of closed loop were you planning on going with?
 
Mine has the return lines below the water level the ones on the top are about 6-8" below the very top of the tank
 
<a href=showthread.php?s=&postid=7060176#post7060176 target=_blank>Originally posted</a> by superedge88
infrared69 does make a good point about closed loops having little to no head pressure, though I would like to clarify a little about exactly what types of closed loops have head pressure and which ones don't. The types of closed loops that do have some head pressure are the manifold types where there is a manifold that sits on top of the tank, since you are pumping water above the water level in the tank then you are going to have height induced head pressure. Closed loops that return the water below the water level of the tank do not have any height induced head pressure. Seth, what type of closed loop were you planning on going with?
Click to expand...
In this situation, the head pressure is only the top of the tank to the manifold, so what, 6" max head pressure. Its negligible

and thats only if the outlets are above the tank. If the loop goes above the tank, and then back into the tank, theres still no head pressure.


Those seahorse pumps are probably pressure rated, and can probably pump up to 100' or something rediculous like that. The dart is the best solution for this situation.


From what I've heard though, Sequence is no longer offering the Baldor motors..whats the deal?
 
My newer style hammerhead (completely black housing, no cooling fins, black wet end) still has a baldor motor, it says baldor on the side. Is there an even newer style that you are speaking of?
 
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