sump turnover rate

[dr_sudz]

Are you guys using display tank vol. or total system vol. in your calculations?

Means the total tank size.

 

[cockroach]

he used the words i was trying to use!, lol.

i only remember it well coz i spent the other night trying to make a non fishkeeper understand when i said the tank's turn over. he thought i was going on about how you mix the water so the top and the bottom doesnt stay there too long and become stagnant. he thought that's what that filter under the sand with all the bubbles does, pushes bottom water to the top. lol

 

[str8dum]

All that assumes that your overflows, etc.. can flow 2000 gals/hr or whatever. Esp with overflows, you can;t just say I want to turn the water 10x and buy a pump. You are limited by your overflows.

 

[bLuShiZzLe]

All that assumes that your overflows, etc.. can flow 2000 gals/hr or whatever. Esp with overflows, you can;t just say I want to turn the water 10x and buy a pump. You are limited by your overflows.

how do you know how much is flowing through your over flow?. how do you measure it so that you can buy a pump suitable for the overfrlow?

 

[JardiniBoy]

Means the total tank size.

Sorry, but you're being a little vague. Do you mean the total size of the display tank, or is it display tank plus sump tank. If it's the latter, how to you calculate the sump tank's volume considering that it's full of media?

 

[vanimate]

All that assumes that your overflows, etc.. can flow 2000 gals/hr or whatever. Esp with overflows, you can;t just say I want to turn the water 10x and buy a pump. You are limited by your overflows.

My overflow can handle 1400 GPH ,so the max i can do is 6.66x, I am aware of this and I know that I cant just "buy a pump". I just wanted to know what turnover rate other people were using.

 

[rallysman]

I use 3x turnover with a lot of biomedia. I've never had a problem, and I've had some fairly heavy bio loads. My ammonia/nitrite have always been at 0, and the fish have always been healthy, so it works just fine IMO.

 

[Dr Joe]

Sorry, but you're being a little vague. Do you mean the total size of the display tank, or is it display tank plus sump tank. If it's the latter, how to you calculate the sump tank's volume considering that it's full of media?

Total size of display tank...sump is just a flow-thru so it doesn't count except for resistance.

This whole thing is just a rule of thumb and not an exact science.

Dr Joe

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[Lil_Stinker]

Total size of display tank...sump is just a flow-thru so it doesn't count except for resistance.

This whole thing is just a rule of thumb and not an exact science.

Dr Joe

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Dr Joe, I am shocked...

I would beg to differ; if the sump holds 200g then the water volume of the system is tank+200

For example a 1000g display tank & 2 100g sumps is a 1200g system & should be treated as such.

Just because there are no fish depositing poo-poo in the sump does not mean it does not exist.

the sump increase water volume, decreases fish/gal..

Not saying the rate needs to be increased by a factor of the sump size, just looked at... because as we all know, with the proper filtration media & a low bio load, you could likely do 1 turn/hour & have a healthy tank.

 

[Dr Joe]

Dr Joe, I am shocked...

I would beg to differ; if the sump holds 200g then the water volume of the system is tank+200

For example a 1000g display tank & 2 100g sumps is a 1200g system & should be treated as such.

Just because there are no fish depositing poo-poo in the sump does not mean it does not exist.

the sump increase water volume, decreases fish/gal..

Not saying the rate needs to be increased by a factor of the sump size, just looked at... because as we all know, with the proper filtration media & a low bio load, you could likely do 1 turn/hour & have a healthy tank.

I'll concede to your thinking, but stay with mine... the sump is static in this instance. It does however have to be included for medication, heating/cooling, for the wife to grumble about and to take up space.

I wonder what it would be like to use a diatom filter from a 20,000g swimming pool, with a couple resin filters for ammonia. Getting close to nervona? (not the band)

Hey, if we filter to much could we end up with just Oxygen & Hydrogen?! ;-)

Dr Joe

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