[tmncali]

Here it goes,
MagDrive 1200gph Water Pump
115 Volt 60 Hz
110 Watts - 1.6 amps
1100gpd at 4 feet

MagDrive 1800gph Water Pump
115 Volt 60 Hz
145 Watts - 1.5 amps
1350gpd at 4 feet

M12 10gph per Watt @4ft
M18 9.3gph per Watt @4ft
as P.A. website states

now i maybe wrong but isnt it Amps*Volts=Watts?
M12 1.6A*115=184 Watts yielding ~6gph per watt
M18 1.5A*115=172 Watts yielding ~8gph per watt

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Either way, my question is, "Would 2 Mag 12's for my 140 be ok?
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From Danner Mfg
Model 12
Mag-Drive 15.0'max 1175gph@1ft 110 Watts 1.5Amps

Model 18
Mag-Drive 20.0'max 1700gph@1ft 145 Watts 1.5Amps

so i dont know.. is the 12 a stronger pump seeing that they say it only loses 25gph@1' vs. 100gph@1' on the 18?

12 loses 3%@1'
18 loses 5.5%@1'

i may be thinking this too much so back to original reason for post.

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"Would 2 Mag 12's for my 140 be ok?
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Thanks

tony

[Ltspd]

What are you using the pumps for? As far as the best pump for the money the dolphin ampmaster is it, 1 amp with 3600gph. Yes its more expensive than the mag's but it will pay for itself quickly.

[golfish]

Tony,
Where are you located? I'm in Azusa.

I'm running an Amp master 3000 (best pump out there IMO) and a Mag 12..........your welcome to visit anytime


Psssssss, don't tell but I can get Southdown sand localy


Mark

[tmncali]

Ltspd
thank you for the suggestion.
they will be used for circulation, out of the sump.into the tank. i would like to have each return on a separate pump. thats why i have shifted away from the ampmaster which is what i was going to buy after doing some reading.
i guess the operating cost between the two isnt my main concern as much as if the two 12's would be sufficient to circulate the tank. i really wanted to go with the ampmaster but i would like the flexability of having the ability to shut down each side independently/ each side plumbed separately also .i am possibly throwing a mag5 or 7 onto a refugium. closed loop or half/quarter teed off to sump. or half teed to a skimmer.

Thanks tony

golfish

im in fontana, I15 and summit ave. would like to check them out sometime soon, if i could. email me.

Thanks tony

[golfish]

IMO. two Mag 12 are not enough for your tank and will be a waste of electricity. There's no reason you can't use an Amp Master with Ball valaves to shut down one side.......

[Ltspd]

I agree with Mark. Also if you want to switch sides of flow then you can use electro/mechanical ballvalves or solenoids to accomplish the switching

[tmncali]

well i dont know but i may be leaning towards the AMPMASTER 3600 just to make sure i have enough flow.

thanks

tony

[Aquariust]

IMHO, 2 1200's would be plenty in a 140! If your not sure go with 2 1800's. The ampmaster is a bit pricey. Why spend all the extra money only to tone it down with ball valves?

Mag is a cheaper alternative, let your wallet be your guide!

[golfish]

Aquariust,

You asked "Why spend all the extra money only to tone it down with ball valves?"

Answer-- Electricity


The difference in the Amp Master cost will pay for it self in one year, maybe even 6 months depending on where you live.

Oh yeah, this pump makes A LOT LESS noise and won't transefer ANY heat......

In the long run, A Mag is a NOT cheaper alternative....

[Aquariust]

just did some research on the aqua sea amp master. Nice looking pump. Only draws .9 amps. I couldn't find how many watts it draws though. I would also like to see the dimensions for the 2100GPH model.

My pump decision time hasn't come yet. I am still debating one pump or two. If used 2 they would each be on a seperate GFCI. This way if one GFCI tripped I'd still have some flow. If I went with 1 large pump like the amp master this plan would be out. What is the amp draw on Mag's?

Would it really be that cost effective between a mag and an amp master?

Thanks GF!

[golfish]

I'm not exactly sure on the Amps for a Mag 12, I think its just a little more then the Amp Master 3000.....Mags are good pumps (except fo the mag 7), I use 3 of them on my 150 but they do use a lot of juice when your comparing them to the Amp Masters..

I would think the AM2100 would be close in size to the AM3000 which is about 11" long, 6" wide and 8" tall....

Mark

[Ltspd]

Amps x Volts = Watts

So a 1 amp pump draws 120watts

1a x 120vac = 120watts

[tmncali]

sorry all i have been neglecting my online messages...



MagDrive 1200gph Water Pump
115 Volt 60 Hz
110 Watts - 1.6 amps
1100gpd at 4 feet

MagDrive 1800gph Water Pump
115 Volt 60 Hz
145 Watts - 1.5 amps
1350gpd at 4 feet

i have yet to make a decision and i need to soon. why does this have to be so difficult?


thanks again

tony

[tmncali]

Would it really be that cost effective between a mag and an amp master?

1ampmaster<vs>1 mag 12 . initial cost would be ~170 more for ampmaster which still would be made up in 10 mths. the diff would be for me~.40day, 12.00$ month but then it is 3000gph <vs> 1200 gph which isnt quite matched. but,

1 ampmaster <vs> 2 mag drive 12?

cost..270$ <vs> 200$
amps..1 <vs> 1.6 x 2 3.2
watts..120 <vs> 384
24 hr use..2880 <vs> 9216
daily cost.. ~.66 <vs> ~2.11

this is based on my .23 overbaseline which is where i will be paying for these.

monthly 30day..19.8$ <vs> 63.59$

$ 50 more up front but ~43.79$ a month in electricity savings. its sort of a difference.

HTH you help me.

thanks

tony

[tmncali]

quick question?

how bad would it be to run 1.5 pipe up to my 1 inch bulkhead then run 1.5 in out the other side? is should flow pretty cose to rating then wouldnt it?

anyone doing this or tried it and had it fail, blow up or whatever?

Thanks in advance and thanks again.

tony

[golfish]

Tony, if your talking a 1" bulkead to feed the pump that would NOT be good. this pump should be feed with 1.5" pipe and bulkhead

[tmncali]

golfish,

no the inlet for the pump would be 1.5 or 2 or whatever i need. not yet made so i am flexible there. the 1.5 oulet would have to go out the pump 1.5 pipe to 1 inch bulkhead then back to 1.5 inch.

does anybody have theirs setup and working this way?

or could i do 1.5 out directly into 2 inch pipe to 1 inch bulkhead back to 1.5 inch?

i would like to buy an ampmaster 2100 now and with my electric savings buy a second one in 6-9 months. plan...

worst case i guess i can go see if i can find someone to drill my holes larger. you know anyone over on your side of kellogg interchange? or my side for what matters.

thanks

tony

[golfish]

I don't see any need to go back to 1.5" after you've gone through 1". This will reduce the gph a whole lot. If your going down to 1" why not split it into two 1" lines. If you only have one 1" bulkhead in the tank you could run the other 1" line up and over the top of the tank to maybe a spray bar or even better a Sea Swirl.

Mark

[tmncali]

golfish,

if i stay with just one pump i could go out 1.5 to 1inchx2 to the two return bulkheads( 1 in each corner). i will plumb it separate and wye connect it at the begining? or as far away from pump as possible?

thanks

tony

[golfish]

always try to go as far as you can with the 1.5" PVC then split to 1"