Enough Flow?

[Ian H]

Nothing wrong with my tank/filters but im just wondering if the flow is considerd good or bad. Its a 380L tank with 2 Aquaone CF1000 filters on.

they both do 1000lph so thats 2000lph in a 380L tank? Like i said nothing is wrong, just nice to know

 

[adamgreen240]

Thats a good flow. you will get about 5 times turnover which is completely fine. Dosent beet my turnover though!
Eheim 2080 1700l/h
Eheim 2078 1850l/h
Tank is 450 litres

Giving me 7.8 times turnover.

Dont forget though, the turnover will be lover though once you account for media and pipework etc.

 

[piper]

yeah you will only get about 60-70% of those flow rates

 

[aaronnorth]

Thats a good flow. you will get about 5 times turnover which is completely fine. Dosent beet my turnover though!
Eheim 2080 1700l/h
Eheim 2078 1850l/h
Tank is 450 litres

Giving me 7.8 times turnover.

Dont forget though, the turnover will be lover though once you account for media and pipework etc.

I get 10x

fluval 205 (600l/ph) on a 60l tank

 

[kewskills]

Thats a good flow. you will get about 5 times turnover which is completely fine. Dosent beet my turnover though!
Eheim 2080 1700l/h
Eheim 2078 1850l/h
Tank is 450 litres

Giving me 7.8 times turnover.

Dont forget though, the turnover will be lover though once you account for media and pipework etc.

I get 10x

fluval 205 (600l/ph) on a 60l tank

Your tank must be like a washing machine, or whirlpool

 

[aaronnorth]

not really, it is good as it pushes the CO2 and nutrients around the tank and it stops any dead spots.

 

[adamgreen240]

haha well i have used a 405 on a 60 litre tank (1300 l/h) for a whopping 21 times turnover. i do turn it down a bit though . Haha

 

[waterdrop]

So Aaron, where the heck would I have gotten the idea from that some enthusiasts like only 3x or 4x in planted tanks? Lately I've seen a number of references to planted tank people doing up to 10x. I know I read the 3x-4x recommendation (for planted tank hobby this is) somewhere here in planted or hardware forums (and I thought part of it was about some plants decidedly not liking high currents.)

Is it just old thinking?

~~waterdrop~~

 

[aaronnorth]

There are a few plants that dont like the flow like vallis and cabomba which are weaker and can grow bent or get destroyed. Most are ok, even the ones i mentioned are if kept away from the filter outlet.

I know George Farmer likes to go more into the 20x turnover like what Adam had (I'm sure he used a fluval 405 on the 60l opti-white he did for PFK)

 

[waterdrop]

Well gee, maybe lots of turnover, if you can control it ok, is one of those secret ingredients of great tanks... kind of like good water changes...