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Old 03-04-2005, 08:03 PM   #1
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How Many Powerheads do i Need?

I am getting a 46 Gallon tank and a Bak Pak 2 skimmer that comes with a Rio 600 that does 200 GPH, and i was gonna get a maxi jet 1200 which pumps 295 gallons per hour. my question is, is this enough? do you count the one that powers the skimmer? Also, i plan on getting two heaters, so i can have them both on if one goes off the other will keep the temp right, how many watts should these be?

TIA, Jeff
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Old 03-04-2005, 09:06 PM   #2
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I would suggest 2 MJ 900's or 1200's
The flow your getting from your skimmer isn't going to add up to 200gph.
it just needs that strong of a pump to push it into the injector or venturi.
flow coming out of your skimmer might be 50gph or so(guessing at 50gph)
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Old 03-04-2005, 10:55 PM   #3
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so 2 Maxi 1200's would be more then enough i assume.
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50 Gallon Oceanic: 2 maxijet 1200's, 2 150 watt visitherm heaters, BakPak II Skimmer with PS & BT, Coralife Lunar 2X65 watt Power Compacts

Filtration: 50lbs LR.com, 60lbs sand

Swimmers: 2 O. Clowns, Yellow Watchman, Firefish, Yellow Tang, Dottyback.

Clean-Up: Several snail & hermits, Skunk Cleaner, 2 Peps.

Corals: 2 zoo colonies, yellow polyps, star polyps
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Old 03-05-2005, 01:14 AM   #4
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I would say so.
And I think most people would agree
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Old 03-05-2005, 01:31 AM   #5
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I'd say so...for a 46 gal. You're shooting for a minimum of 460gph total flow. More is better though. One thing you want is turbulence in the water instead of laminar flow. Aim the powerheads so that their flow collides with each other. I'd probably start out with one at each end of the tank. You can always add a third later if you see a need.
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Old 03-05-2005, 12:05 PM   #6
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thanks, im gonna order two mj1200's
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50 Gallon Oceanic: 2 maxijet 1200's, 2 150 watt visitherm heaters, BakPak II Skimmer with PS & BT, Coralife Lunar 2X65 watt Power Compacts

Filtration: 50lbs LR.com, 60lbs sand

Swimmers: 2 O. Clowns, Yellow Watchman, Firefish, Yellow Tang, Dottyback.

Clean-Up: Several snail & hermits, Skunk Cleaner, 2 Peps.

Corals: 2 zoo colonies, yellow polyps, star polyps
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Old 03-05-2005, 02:33 PM   #7
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thanks, im gonna order two mj1200's
Great choice. Mine have been running great and are very reliable.
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Old 03-05-2005, 08:56 PM   #8
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I have a mag 7 pumping water from the sump into my 55g, would that and one MJ-1200 be enough?
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Old 03-06-2005, 09:51 AM   #9
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I have a mag 7 pumping water from the sump into my 55g, would that and one MJ-1200 be enough?
For a FOWLR I would think that would be okay. A second maxi-jet would give you a more caotic water flow and help eliminate dead spots in the tank though.
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Old 03-06-2005, 05:15 PM   #10
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I'm still trying to reuglate my flow with 2 powerheads and the return from my pump. The current was so strong that it threw my bangai cardinal into a tailspin. My PJ card hadles it ok, but then there's the problem of feeding time. DO you turn th PHs off when you feed?

I haven't quite figured this one out yet.
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30 gal standard 55 lbs LR, 60 lb live sand, 10 gal sump/refugium. Urchin skimmer, mag7 pump, 3 x 96W PC combination 10,000K/actinic bulb, 2 blue LED moonlights
SG 1.024, temp 79.5, pH 8.4

Livestock I added:

1 skunk cleaner. 12 hermits: red, scarlet, blue. 15 or so assorted snails. Discosomas, Ricordia, Rhodactis mushroom corals, chaetomorpha (sump), 1 feather duster, Montipora digitata, Montipora capricornis, Montipora hispids. assorted zoos, Xenia, Kenya tree coral, green Sinularia, green star polyps, branching hammer coral, bubble coral, Devil's hand leather. Yellow chromis, purple firefish.

Hitchhikers: the usual suspects :crabs, bristles, urchin, mantis shrimp (now in exile in mantis tank)

List of possible/likely newcomers:

Feather duster. PJ cardinal, Bangghai cardinal, Firefish goby, Clownfish, Neon goby, Yellow watchman goby, Orchid dottyback. Various corals.
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