Atb 840

Riblet

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#1
So what's a realistic max water volume with a heavy bio load?
 

BeanMachine

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#2
I just remembered I didn't give you a sump water level for it... I'll get it later for you.

I have about 160 to 170 gallons not exactly sure, 12 fish on the small size just one small yellow tang the rest wrasses and smaller. It works great for me over the years.
 
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#3
So what's a realistic max water volume with a heavy bio load?
IMO, 120g heavily loaded display (btw, I consider Cody's tank moderately loaded) is the max i would feel comforatable with that skimmer. That being said if I was building a 120, I would choose a 1050 because with heavy bio loads come heavy feedings. I want that extra power just in case.

There are some people that will claim you can run a 180g with the 840. I'm just not one of them!
 

solitude127

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#4
I say for a heavy bioload, 120 - 150. The new 840 has a double plate now which should help with the turbulence in the chamber.


 

BeanMachine

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#5
We talking a 120 gallon display, or 120 gallons total water volume?

My sump is about 40 gallons and I have a small nano also attached.

Greg C definitely believes in go big or go home when it comes to skimmers.
 

BeanMachine

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#7
The 840's come with the PSK 1000... I read other places they call them the syncra on the 840 v2 so its confusing. I've never had an issue with the pump. I've had my skimmer at least 3 years.
 

BeanMachine

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#8
I say for a heavy bioload, 120 - 150. The new 840 has a double plate now which should help with the turbulence in the chamber.


Cory mentioned that to me, was gonna ask the ATB rep Chad if I can get just the double bubble plate which is the only difference.
 

lowbudget

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#9
agree with the guru
IMO, 120g heavily loaded display (btw, I consider Cody's tank moderately loaded) is the max i would feel comforatable with that skimmer. That being said if I was building a 120, I would choose a 1050 because with heavy bio loads come heavy feedings. I want that extra power just in case.

There are some people that will claim you can run a 180g with the 840. I'm just not one of them!
 
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#13
IMO, 120g heavily loaded display (btw, I consider Cody's tank moderately loaded) is the max i would feel comforatable with that skimmer. That being said if I was building a 120, I would choose a 1050 because with heavy bio loads come heavy feedings. I want that extra power just in case.

There are some people that will claim you can run a 180g with the 840. I'm just not one of them!
I was gonna run a 1050 for my 150g, but Chad advised against it and said it'd be too big. I wish I would have gotten a second opinion...
 
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#14
I was gonna run a 1050 for my 150g, but Chad advised against it and said it'd be too big. I wish I would have gotten a second opinion...
If it makes you feel better, the Bubble king Double Cone should do a bit more than the 840 due to more air draw from a larger pump.
 

lowbudget

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#17
I was gonna run a 1050 for my 150g, but Chad advised against it and said it'd be too big. I wish I would have gotten a second opinion...
hehe.. i run a tc2560 on my 150. 1500 air draw for max 34 watt not bad with gravity feed. cant beat that with a baseball bat. sucker rated for 500 gallon heavy stocked. older skimmer but skims like a champ.
 
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#18
hehe.. i run a tc2560 on my 150. 1500 air draw for max 34 watt not bad with gravity feed. cant beat that with a baseball bat. sucker rated for 500 gallon heavy stocked. older skimmer but skims like a champ.
But you also own a smaller skimmer that will do 2100 lph just sitting on the shelf. lol
 
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#20
i will be using the smaller skimmer after im done with my remodel. have to redesign my system for a in sump skimmer.
in sump defintely more efficient, but its hidden. Not like booom, beautiful skimmer on deck in your face!
 

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